【０００１】
【発明の属する技術分野】
本発明は例えば通信ケーブル、電力線等の各種の配線類を路側帯等における地中に埋設配線するとき、これらを保護収納すべく地中に埋設配管される熱溶着可能なポリエチレン樹脂製管を非開削工法によって直接に埋め込み設置するに際し、短尺状で用意されている単位材としての複数のポリエチレン樹脂製管を埋設現場で端部相互を一体長尺状に溶融連結しながら連続供給する熱溶着可能な合成樹脂管の連続供給方法及びその連続供給装置に関する。
【０００２】
【従来の技術】
近時、ガス管、水道管等の各種の配管類を地中に埋設するに際し、環境負荷の低減、道路工事の縮減、工事期間の短縮等の社会的要請に応えるために、路面を掘削する開削工事を実施することなく非開削で埋設工事を行う各種誘導式非開削工法が実施されつつある。この非開削工法は、発進抗から地中に貫入したドリルヘッドを地表面からの電磁誘導で深度、方向、傾斜等を適宜に指示制御することでパイロット孔を開削形成しながら到達立抗まで前進到達せしめ、その後、ドリルヘッドに取り付けたパイプ引き込み治具に連結した所定の配管類を、回転後退するバックリーマによって土砂を解きほぐしながら、引き込み埋設するとしているものである。
【０００３】
こうした非開削工法によって配管類を埋設するとき、その配管類が可撓性ある連続した長尺状のものであれば、所定長さの配管類の端部をバックリーマーに連結しておけばよく、バックリーマの後退に伴い配管類の引き込み埋設作業が完了する。
【０００４】
【発明が解決しようとする課題】
しかして埋設すべき配管類夫々が短尺状のもので、一体長尺状に連続形成されていない場合には、連続状態となるように予め接続しておかなければならない。ところが例えば通信ケーブル等を収納保護すべく埋設されるポリエチレン樹脂製の管路材はその単位材としての１本のものでは、現場等へのトラック等による搬送を可能とさせること等のために例えばで直径が約３００ｍｍ程度、長さが約８０００乃至１２０００ｍｍ程度としてある。そして埋設現場においては、単位材としての加熱溶融した管路材の端部相互を溶着接続することで所定長さのものとして形成している。ただ所定長さに接続構成するとしても、それ自体の可撓性は極めて小さいから巻回状に纏めることはできず、例えば作業現場が狭隘であったり、交通量が多く、作業場所が確保できなかったり等の場合であると、長尺状のままではその一時的な保管も困難である。
【０００５】
また管路材が短尺状の所定長さに設定されていることで、複数の管路材夫々の端部を加熱溶融して突き合わせ接続させるも、固化接続にはその端部相互を突き合わせ接続するためのある一定の維持・待機時間が必要である。それ故管路材が直接的に引き込まれるときには接続部位が固化されるに必要な待機時間に相当する時間毎に引き込み作業を中断して、固化接続作業を行わざるを得ないものである。そのためこうした埋設作業は一般的に非能率的なものとなり、作業時間に無駄が生じ得るばかりでなく、溶融される接続部位相互がしっかりと固化されていないときには、地中への引き入れ時の引き込み抵抗作用に起因して離反、解体されることもあった。
【０００６】
そこで本発明は叙上のような従来存した諸事情に鑑み創出されたもので、作業現場が狭隘なために長尺状に形成した管路材等の保管場所が確保できなくても、地中への引き込み埋設に際し、その引き込み作業に平行して順次に管路材を接続しながら送り込むことで、引き込み作業を中断させることなく連続的に遂行できるものとし、非開削工法によっての管路材の埋設工事の一層の利便性を図ることができるばかりでなく、単位材としての管路材相互を強固に固化接続して引き込みに伴い生じ得る各種の抵抗等によっても離反、分離させることなく、安定的な一体化された長尺状の管路を埋設構成できるものとした地中埋設用管路材の連続供給方法及びその連続供給装置を提供することを目的とする。
【０００７】
【課題を解決するための手段】
上述した課題を解決するため、本発明における地中埋設用管路材の連続供給方法にあっては、非開削工法によって管路材Ｐを地中に連続的に引き込み埋設するに際し、地中に進入する引込案内部材（Ｒ）に連繋される管路材Ｐにおける接続すべき前後端夫々を加熱溶融した後、その加熱溶融させた端部相互を突き合わせ状に接合し、その接合状態を保持したままで引き込み埋設位置まで送り込み前進してその送り込み中で接合部分を固化させる一方、送り込み終了後には後退して送り込んだ管路材Ｐの後方で供給した別の管路材Ｐを同様に加熱溶融し、接合状態を保持して送り込み前進するものである。
引込案内部材（Ｒ）による管路材Ｐの地中進入速度と、送り込む管路材Ｐの長さとは、送り込み中の前後の管路材Ｐ端部相互を固化接続するに必要な固化時間に対応して設定するようにできる。
また上記の連続供給方法の実施に直接使用される地中埋設用管路材の連続供給装置にあっては、所定の単位長さで搬入用意される前後の管路材Ｐを、その端部相互を加熱溶融状態にして突き合わせることで固化接続し、管路材Ｐの引き込みに追随して前進移動し、送り込み後は後退移動するようになっている加熱溶融接続台車１０と、この加熱溶融接続台車１０によって接続されることで長尺状に構成された管路材Ｐを支持して引き込み埋設位置まで移動させるよう加熱溶融接続台車１０の前方に配置して前後に移動する支持移動台車３０と、加熱溶融接続台車１０に単位材として供給される管路材Ｐを支持移動させるよう加熱溶融接続台車１０の後方に配置して前後に移動する供給移動台車４０とを備えており、またこれらの加熱溶融接続台車１０、支持移動台車３０、供給移動台車４０は管路材Ｐの引き込み埋設方向に沿って作業現場に敷設されたレール１上で移動走行自在に配置して構成できる。
加熱溶融接続台車１０は、レール１上を走行移動するよう走行車輪１２を底面に備えた台車本体１１と、この台車本体１１上に搭載された加熱溶融接続機構１５と、加熱溶融接続機構１５の高さ位置を昇降調整させる昇降手段２５とから成り、加熱溶融接続機構１５は、接続方向で前後して配置される管路材Ｐ夫々を握持固定する前後で対となるクランプ手段１７Ａ，１７Ｂを有し、このクランプ手段１７Ａ，１７Ｂの少なくともいずれか一方（１７Ｂ）を他方（１７Ａ）に対してスライドさせることで管路材Ｐの端部を突き合わせ状とし、加熱溶融された状態となっている管路材Ｐの端部相互を接合一体化するようになっている。
加熱溶融接続機構１５は、加熱溶融接続台車１０の台車本体１１である作業台１３のほぼ中央位置に配置されており、昇降手段２５によって昇降される昇降ベース１６上に、管路材Ｐ周囲を囲繞するよう上下で揺動開閉される半割リング状で、管路材Ｐを囲繞した状態で閉止されるよう前後に配したクランプ手段１７Ａ，１７Ｂと、管路材Ｐの引き込み方向の後方側に配置されているクランプ手段１７Ｂを前方側に配置のクランプ手段１７Ａに対してスライドさせるスライド手段１９と、前後のクランプ手段１７Ａ，１７Ｂ相互間に進退自在に配装され、前後のクランプ手段１７Ａ，１７Ｂ夫々で握持している管路材Ｐの端部に当接してこれを溶融状態にさせる加熱溶融盤２１とを備えて構成できる。
支持移動台車３０は加熱溶融接続台車１０の前方位置で複数台にしてレール１上に配置されており、固化接続された長尺状になっている管路材Ｐを支持していることにより管路材Ｐの荷重が負荷された状態で、管路材Ｐの移動に伴い追随移動・走行し、その支持間隔に対応する間隔以下の長さを備えた索条材３５によって相互間が連繋されているものとして構成できる。
供給移動台車４０は加熱溶融接続台車１０の後方位置で複数台にしてレール１上に配置されており、固化接続させる単位材としての管路材Ｐの支持間隔に対応する間隔以下の長さを備えた索条材４５によって相互間が連繋されているものとして構成できる。
更にこれらの支持移動台車３０、供給移動台車４０は、底面に走行車輪３２，４２を備えた台車本体３１，４１と、この台車本体３１，４１の上部で互いに傾斜して正面から見てほぼＶ字状に形成配置される左右のローラから成る引き入れ走行部３３あるいは供給走行部４３とを備えて構成できる。
【０００８】
以上のように構成された本発明に係る地中埋設用管路材の連続供給方法及びその連続供給装置にあって、前後の端部相互の加熱溶融、固化接続で長尺状に構成された管路材Ｐは引込案内部材（Ｒ）に連繋されることで引込案内部材（Ｒ）の走行と共に地中に進入され、その引き込み中に、最終部分の管路材Ｐの端部に更に別の管路材Ｐを移動させながら加熱溶融、固化接続させ、引き込み埋設作業を中断させることなく連続・継続的に遂行させる。
管路材Ｐの地中進入速度、管路材Ｐの長さは、前後に配置される管路材Ｐ端部相互を固化接続するに必要な固化時間に対応することで、地中埋設位置に接続部位が到達する以前に接続部位の固化を終了させるものとなり、埋設後で離反、分離等を生じさせない。
加熱溶融接続台車１０における前方に配置の支持移動台車３０は、接続構成された複連長尺状の管路材Ｐを引き込み埋設位置まで案内支持させ、加熱溶融接続台車１０の後方に配置の供給移動台車４０は、接続すべき単位材の管路材Ｐを加熱溶融接続台車１０側に連続的に供給支持させる。引込案内部材（Ｒ）の引き込みに追随する支持移動台車３０の前進移動に伴う加熱溶融接続台車１０の前方への送り込み前進、これに追随する供給移動台車４０の前進移動で管路材Ｐを引き込み埋設位置まで案内支持させる。また送り込み後で加熱溶融接続台車１０が後退移動するのに伴う支持移動台車３０の追随後退、加熱溶融接続台車１０によって順次に押される供給移動台車４０の後退移動は、後方から加熱溶融接続台車１０に供給される管路材Ｐを支持させる。
加熱溶融接続台車１０における加熱溶融接続機構１５は、引き込み埋設方向の後方から供給される単位材としての管路材Ｐの前方端部を、前方に送り込む管路材Ｐの後方端部に夫々を加熱溶融、突き合わせ状に接続して一体状に固化させる。このときの加熱溶融接続台車１０自体の移動は、前後の管路材Ｐの端部相互の突き合わせ状の接続部位の接続状態を保持しながら管路材Ｐの送り込みに追随し、引き込み埋設位置に到達するまでに固化させる。
加熱溶融接続機構１５の前後のクランプ手段１７Ａ，１７Ｂは、その閉止で前後の管路材Ｐ端部夫々の加熱溶融時、突き合わせ接続時等では位置決めして握持させ、更にはその解放で後退復帰するときの加熱溶融接続台車１０自体を円滑に移動させる。また前後のクランプ手段１７Ａ，１７Ｂにおける一方（１７Ｂ）の他方（１７Ａ）に対するスライドは、加熱溶融盤２１による加熱溶融時、端部相互を接続固化するときの突き合わせ時等で、加熱溶融接続台車１０、支持移動台車３０、供給移動台車４０等がレール１上で移動されることと相俟ち管路材Ｐを前後にスライドして位置決めさせる。
昇降手段２５は加熱溶融接続機構１５の高さを位置決め調整させ、例えば作業現場において管路材Ｐの引き込み埋設方向に沿って生じ得る高低差に対応させ、それを解消して管路材Ｐの支持高さを平坦化させる。
支持移動台車３０相互間を更には加熱溶融接続台車１０前部と連繋している索条材３５、供給移動台車４０相互間を更には加熱溶融接続台車１０後部と連繋している索条材４５夫々は、支持移動台車３０、供給移動台車４０夫々が独自に移動しても管路材Ｐを支持するときの支持間隔長さ以下に調整させて管路材Ｐを安定して支持させる。
【０００９】
【発明の実施の形態】
以下図面を参照して本発明の一実施の形態を説明すると、図において示される符号Ｐは、非開削工法におけるパイロット孔に沿って埋設孔を掘削しながら後退進行するバックリーマＲに連繋されて地中に引き込み埋設される管路材であり、この管路材Ｐは例えば直径が約３００ｍｍ程度のポリエチレン樹脂製のものとしてある。そして所定長さ例えば８０００ないし１２０００ｍｍ程度の長さとして埋設現場に搬入された管路材Ｐは、埋設方向に沿って相前後して配置されたときの端部相互を加熱溶融状態にして突き合わせられることで固化接続され、長尺状に構成された状態で引き込み埋設される。
【００１０】
そのため所定の単位長さで搬入用意される単位材としての１本毎の管路材Ｐ相互を、その端部相互を加熱溶融状態にして突き合わせることで固化接続し、管路材Ｐの引き込みに追随して移動するようになっている１台の加熱溶融接続台車１０、この加熱溶融接続台車１０によって接続されることで複連長尺状に構成された管路材Ｐを支持して埋設箇所まで移動させる複数の支持移動台車３０、加熱溶融接続台車１０に単位材としての管路材Ｐを供給するときの管路材Ｐを支持移動させる複数の供給移動台車４０夫々が、埋設作業現場に敷設されたレール１上で移動走行自在にして配置してある。また、加熱溶融接続台車１０自体の走行間隔は引き込み埋設される管路材Ｐの末端部に次の管路材Ｐを接続させるとき、その接続部分を十分に固化させるまでの間で保持する時間に対応する距離とされ、最大前進位置は例えば後方位置で設置されている移動しない作業ベース２部位からの規制索条３によって設定されている。
【００１１】
加熱溶融接続台車１０は図９に示すように、レール１上を走行移動するよう走行車輪１２を底面に備えた台車本体１１と、この台車本体１１上に搭載された加熱溶融接続機構１５と、加熱溶融接続機構１５の高さ位置を昇降調整させる昇降手段２５とから成る。加熱溶融接続機構１５は、接続方向で相前後して配置される管路材Ｐ夫々を握持固定する前後で対となるクランプ手段１７Ａ，１７Ｂを有し、このクランプ手段１７Ａ，１７Ｂの少なくともいずれか一方（１７Ｂ）を他方（１７Ａ）に対してスライドさせることで管路材Ｐの端部を突き合わせ状とし、加熱溶融された状態となっている前後の管路材Ｐの端部相互を接合一体化するようになっている。
【００１２】
台車本体１１は、管路材Ｐの接続作業を遂行するための作業員が乗り込み、作業を行うのに十分な作業域を形成する平面でほぼ矩形状の作業台１３の底面に走行車輪１２を配装して成り、例えば形鋼材、鋼板等を組み込み構成すること等によって、レール１の敷設方向に沿って長く形成されている。またこの台車本体１１は必要があれば、作業台１３に搭載した例えば油圧駆動式の走行ユニット１４によって自走できるようにしてある。
【００１３】
加熱溶融接続機構１５は台車本体１１である作業台１３のほぼ中央位置に配置されており、昇降手段２５によって昇降される昇降ベース１６上に、管路材Ｐ周囲を囲繞するよう上下で揺動開閉される半割リング状で、例えばこの半割リング部材に枢支した揺動ボルト１８Ａ，１８Ｂによるネジ止めによって閉止されるようになっている前後に配したクランプ手段１７Ａ，１７Ｂと、管路材Ｐの引き込み方向の後方側に配置されているクランプ手段１７Ｂを前方側に配置されているクランプ手段１７Ａに対してスライドさせるスライド手段１９と、前後のクランプ手段１７Ａ，１７Ｂ相互間に進退自在に配装され、前後のクランプ手段１７Ａ，１７Ｂ夫々で握持している管路材Ｐの端部に当接してこれを溶融状態にさせる加熱溶融盤２１とを備えている。
【００１４】
昇降ベース１６は後述の昇降手段２５によって作業台１３面に対して上方あるいは下方位置の所定高さ位置に調整されることで埋設される管路材Ｐの供給高さ位置に設定されるもので、作業台１３の所定位置で刳り貫き状に形成された開口部に配置されており、この上面には、管路材Ｐの供給方向の前後に沿って相対峙状にしたクランプ手段１７Ａ，１７Ｂを配置してある。
【００１５】
クランプ手段１７Ａ，１７Ｂは、管路材Ｐの端部近傍を囲繞することで握持するほぼドーナツリング状に形成されており、図示のように上下で上下部分夫々に半割状にすると共に、上部分を下部分に対して後部側で揺動開閉自在に軸支し、前部側の開放端夫々を例えば下部分に揺動自在に支承した揺動ボルト１８Ａ，１８Ｂを上部分に係合、ネジ止めすることで閉止するようにして成る。そして開放状態の上下部分内に挿入配置した管路材Ｐに対して上部分を揺動下降し、上下部分全体で囲繞した後に揺動ボルト１８Ａ，１８Ｂによってネジ止めすることで握持固定するようにしてある。なお管路材Ｐの供給方向の後方側に位置する可動式のクランプ手段１７Ｂは、作業台１３上に設けたスライド手段１９によって前方側に位置する固定式のクランプ手段１７Ａに対して前後にスライドするようにしてあり、削成処理時、加熱溶融時、固化接続時夫々でクランプ手段１７Ａに対して前進し、またその位置を保持できるようにしてある。なおスライド手段１９は例えばネジ送り構造、ラック・ピニオン構造、油・空圧シリンダー駆動構造等の送りで例えばレール上に搭載のクランプ手段１７Ｂをスライドするようにしてある。
【００１６】
加熱溶融盤２１は図示のように例えば、前後のクランプ手段１７Ａ，１７Ｂの間隙における側方位置で配した支持台２２に揺動自在に支承連繋されるハンドル２３に設けてあり、例えば電熱式に加熱されるヒーター面を表裏両側面に有している円盤状を呈している。そしてこの加熱溶融盤２１が前後のクランプ手段１７Ａ，１７Ｂ相互間の間隙内に配置された状態で、固定式のクランプ手段１７Ａ、移動式のクランプ手段１７Ｂ夫々で握持された管路材Ｐ夫々の端部が加熱溶融盤２１の両側面に当接されることで、端部夫々を溶融状態にするようになっており、溶融後に移動式のクランプ手段１７Ｂによって後方の管路材Ｐが一旦待避され、再度固定式のクランプ手段１７Ａ側にスライドして管路材Ｐの端部夫々を当接させ、暫時その当接状態を保持するようになっている。なお管路材Ｐの端部夫々の加熱溶融作業に先立ち、管路材Ｐの端部縁面夫々の平坦化削成作業が行われるもので、そのために管路材Ｐ夫々の対向する端部面を削成して平坦面化する削成手段を別途に備えている（図示を省略）。また管路材Ｐ自体は工場において連続形成された後に現場への輸送、搬入を考慮して適当長さに切断されるとき、その切断端同士が判別できるように例えば順次の番号を特定位置に表示しておくのであり、その番号を対応合致させて順次に接続することで、製造時に生じ得る部分的な肉厚の変動に伴う突き合わせ面が一致するように配慮される。
【００１７】
またこの加熱溶融盤２１は図９に示すように、例えばクランプ手段１７Ａ，１７Ｂを設けてある昇降ベース１６上方に形成した塔屋屋根２８に走行移動自在に配装したクレーン具２９によって懸吊、移動可能なものとしてあり、不要時では例えば可動式のクランプ手段１７Ｂの後方に設けてある収納ボックス２４に収納され、使用時にはクレーン具２３によってクランプ手段１７Ａ，１７Ｂ相互間の所定位置に懸吊、移動されるようにしてある。
【００１８】
クランプ手段１７Ａ，１７Ｂを設けてある昇降ベース１６を昇降させる昇降手段２５は、前記作業台１３に開口形成した開口部に配装されており、昇降ベース１６の底面に連繋配置の側面から見てほぼＸ字状に交差されて成るリンク機構２６を油圧シリンダー２７のシリンダロッドの進退動作で伸縮させることで、昇降ベース１６を昇降させるようにしたものである。この昇降ベース１６の昇降位置の調整で、作業現場において生じている段差その他の高低部分による全体レベルを、管路材Ｐの供給、送り込みレベル等に対応して調整設定可能なものとさせ、管路材Ｐの円滑な送り込み等を図るようになっている。
【００１９】
一方、支持移動台車３０は図１乃至図８に示すように、加熱溶融接続台車１０の前方位置で複数台にしてレール１上に配置されており、固化接続された複数連で長尺状になっている管路材Ｐを極端に撓ませることなく引き込み埋設位置まで支持案内するものである。すなわち管路材Ｐを支持していることにより管路材Ｐの荷重が負荷された状態で、管路材Ｐの移動に伴い追随移動・走行するようになっており、また望ましくは、固化接続前の管路材Ｐを撓ませることなく支持するに適する支持間隔に対応する間隔以上に支持移動台車３０相互更には加熱溶融接続台車１０との間隔が大きくならないように、すなわちその支持間隔以下の長さになるように可撓性あるロープ、チェーン等の索条材３５によって相互の間隔が規制されるものとして相互間が連繋されている。
【００２０】
そのため支持移動台車３０は、図１０に示すように例えば角パイプ材、鋼板等によって構枠された平盤フレーム構造のものとしてあると共に底面に走行車輪３２を備えた台車本体３１と、この台車本体３１の上部で互いに傾斜して正面から見てほぼＶ字状に形成配置される左右のローラから成る引き入れ走行部３３とを備えて成る。台車本体３１自体は例えば平面で大矩形状の下部フレーム上に支柱を介して同じく平面で小矩形状の上部フレームを上下２段に配置して成り、上部フレームの左右部相互間に架け渡した支持梁部上に引き入れ走行部３３を形成配置してある。
【００２１】
また供給移動台車４０は同じく図１乃至図８に示すように、加熱溶融接続台車１０の後方位置で複数台にしてレール１上に配置されており、固化接続させる例えば単位材としての短尺状の管路材Ｐを撓ませることなく加熱溶融接続台車１０における接続位置まで案内するように支持しているものである。支持するに際し、引き込み埋設作業時ではその作業に先立ち単位材長さの管路材Ｐを所定長さとなるように複数連で予め接続しておくこともあり、それらの接続された所定長さあるいは接続前の単位長さの管路材Ｐ夫々を撓ませることなく確実に支持すべく、その支持間隔に対応する間隔以上に供給移動台車４０相互更には加熱溶融接続台車１０との間隔が大きくならないように、すなわちその支持間隔以下の長さになるように可撓性あるロープ、チェーン等の索条材４５によって相互の間隔が規制されるものとして相互間が連繋されている。なおこの供給移動台車４０自体は図１０に示すように先の支持移動台車３０と同構造のものとして構成されていて、走行車輪４２を備えた台車本体４１の上部で互いに傾斜して正面から見てほぼＶ字状に形成配置される左右のローラから成る供給走行部４３を備えて成るため、これの詳細な説明は省略される。
【００２２】
これらの支持移動台車３０、供給移動台車４０夫々はいずれも、レール１上で自由に移動できるようにしてあり、加熱溶融接続台車１０に供給すべく支持されるときの管路材Ｐの長さに対応して供給移動台車４０相互の間隔が規制され、引き込み埋設するときの連続している管路材Ｐを支持すべく、支持移動台車３０相互の間隔が規制される。また管路材Ｐを支持していることで荷重が負荷された状態で移動されるとき、管路材Ｐの引き込み、供給等によって管路材Ｐ自体が移動されることに追随して、更には相互間を連繋している索条材３５，４５に牽引されることで支持移動台車３０、供給移動台車４０等も移動される。
【００２３】
次に図１乃至図８を参照して管路材Ｐを引き込み埋設するときの作業手順を説明すると、管路材Ｐを引き込み埋設すべき作業現場には工場にて製造され、所定の単位長さに切断された管路材Ｐが輸送車Ｃによって搬入され、ストックヤードに保管される。このときに保管される管路材Ｐは製造・切断時の順序に従って整列されていることが望ましく、引き込み埋設作業時における管路材Ｐの供給・接続は製造・切断時の順序に対応させるようにしておく（図１参照）。
【００２４】
引き込み埋設作業の開始に先立ち、所定長さの単位材としての管路材Ｐは、作業進行の促進を考慮して作業現場において加熱溶融接続台車１０の加熱溶融接続機構１５によって、加熱溶融接続台車１０の前後方向で配置されている支持移動台車３０，供給移動台車４０等によって支持させながらでも、引き込み作業時の余裕を考慮した長さとなるように予め複数本毎に纏めた状態の複数連単位長さの管路材Ｐとして固化接続しておき、ストックヤードＳに一時的に保管する（図２、図３参照）。
【００２５】
引き込み埋設作業時では、加熱溶融接続台車１０の前方に配置した複数の支持移動台車３０上に複数連長さの管路材Ｐを、同様に加熱溶融接続台車１０の後方に配置した複数の供給移動台車４０上に複数連長さの管路材Ｐを夫々セットして、昇降手段２５によって高さ調整された昇降ベース１６上で、前者の後端は加熱溶融接続機構１５における固定式のクランプ手段１７Ａで握持し、後者の前端は移動式のクランプ手段１７Ｂで握持する（図４参照）。次いで移動式のクランプ手段１７Ｂの前方への移動によって後方の管路材Ｐを前方の管路材Ｐに突き合わせ加熱溶融して固化接続する。このとき管路材Ｐの接続端夫々は製造・切断時の順序のものとして配置し、その接続端面を削成処理して平坦面にすると共に加熱溶融盤２１の両側面に突き当てて加熱溶融した後に加熱溶融盤２１を待避させ、再度の移動式のクランプ手段１７Ｂの移動によって後方の管路材Ｐの前端を前方の管路材Ｐの後端に突き合わせ、そのクランプ手段１７Ｂの後退移動を阻止することでそれを保持しておく。
【００２６】
一方、前方配置の管路材Ｐの前端は引き込み埋設位置である例えばハンドホールＨの側壁開口に関連して配置のバックリーマＲに連結しておき、予め掘削されたパイロット孔に沿って後退移動するバックリーマＲによって管路材Ｐを引き込むのである（図５乃至図８参照）。この管路材Ｐの引き込み埋設によって移動される管路材Ｐに追随して支持移動台車３０及び加熱溶融接続台車１０も移動し、加熱溶融接続台車１０ではその加熱溶融接続機構１５によって前後の管路材Ｐ夫々の端部相互を突き合わせ状に維持したままとしており、移動しながらも融着後の固化接続作業を継続している（図４、図６参照）。このときの引き込み速度、予め用意される複数連長さの管路材Ｐの長さ等は、例えば直径が約３００ｍｍのポリエチレン樹脂製管である管路材Ｐ自体の加熱溶融温度は２００±５℃前後であること、その状態で突き合わせられるときでは約４０分で固化されること等を考慮して、その固化に必要な時間に対応するものとして設定調整されるものとなっている。逆に言えば固化に必要な例えば４０分間で、後方配置の接続すべき管路材Ｐの後端が移動前の前方配置の管路材Ｐの後端位置に到達するように引き込み速度、管路材Ｐ長さが設定されるのであり、その溶融固化に要する作業時間で加熱溶融接続台車１０が移動する区域が溶融作業区となる。すなわちこの溶融作業区は、加熱溶融接続台車１０上で前後の管路材Ｐの溶融された端部相互が突き合わせられる開始スタート地点から、その突き合わせを保持しながら移動し、その接続端相互が十分に固化された後に解放され、直ちに後退復帰する終点までの区域である。
【００２７】
次いで管路材Ｐが前方に送られると共にそれに接続される後方配置の管路材Ｐが送られながら接続作業が続行されて十分に固化されると、加熱溶融接続台車１０は、その加熱溶融接続機構１５における前後のクランプ手段１７Ａ，１７Ｂ夫々が管路材Ｐを解放し、また昇降手段２５によって昇降ベース１６を下降させた後、例えば作業員による直接の移動作業で移動前の後方位置に後退移動して復帰し（図５、図８参照）、再度、後方から供給される次の管路材Ｐに対してその高さ位置を調整上昇させて同様に端部面の削成平坦化処理、加熱溶融、固化接続が行われる（図６参照）。次いで固化接続状態を維持したままで加熱溶融接続台車１０が、必要に応じて索条材３５を介して支持移動台車３０と、また索条材４５を介して供給移動台車４０と共に移動されて引き込み埋設位置側に管路材Ｐを順次に送り込むのである（図７、図８参照）。
【００２８】
なお加熱溶融接続台車１０の移動に際し、この加熱溶融接続台車１０の前方に配置の支持移動台車３０夫々は索条材３５を介して相互に更には加熱溶融接続台車１０に連繋されていることで、管路材Ｐを支持した状態で引き込み埋設位置に管路材Ｐを送り込むときは、前方配置のものから相互間の索条材３５によって牽引されて順次に移動して最終的に加熱溶融接続台車１０が移動し、加熱溶融接続台車１０の移動に伴い前方配置の一群の支持移動台車３０夫々の間隔は狭められる。逆に加熱溶融接続台車１０が後方に移動するときは、その直前の支持移動台車３０から順次に後方に移動して、その直近前方に配置の支持移動台車３０から相互間の索条材３５によって牽引されて順次に後方に移動する。
【００２９】
また加熱溶融接続台車１０の後方に配置の供給移動台車４０夫々は索条材４５を介して相互に更には加熱溶融接続台車１０に連繋されていることで、管路材Ｐを支持した状態で加熱溶融接続台車１０に対して管路材Ｐを供給するときは、後方配置の供給移動台車４０が順次に移動して最終的に加熱溶融接続台車１０位置側に移動し、加熱溶融処理後の固化接続状態を維持しながら前方に移動する加熱溶融接続台車１０の移動に伴い加熱溶融接続台車１０側のものから順次に同様に前方に移動する。これに伴い後方配置の一群の供給移動台車４０夫々は相互間を連繋している索条材４５によって順次に牽引され、その索条材４５長さ間隔毎で管路材Ｐを支持する。引き込み埋設位置への管路材Ｐの送り込みが終了して逆に加熱溶融接続台車１０が後方に移動するときは、その直近後方に配置の供給移動台車４０側から加熱溶融接続台車１０によって押されて順次に後方の供給移動台車４０も押されて順次に後方に移動する。
【００３０】
【発明の効果】
本発明は以上のように構成されているために、作業現場が狭隘で、複連長尺状に接続形成した管路材Ｐ等の保管場所が確保できなくても、地中への引き込み埋設に際し、その引き込み作業に平行して順次に管路材Ｐを接続しながら送り込むことで、引き込み作業を中断させることなく連続的に遂行できるのである。そして非開削工法によっての管路材Ｐの埋設工事の一層の利便性を図ることができるばかりでなく、単位材としての管路材Ｐ相互を強固に固化接続して引き込みに伴い生じ得る各種の引き込み圧、抵抗等によっても管路材Ｐ相互が離反、分離することなく、安定的な一体化された長尺状の管路を埋設構成できるのである。
【００３１】
すなわちこれは本発明において、非開削工法によって管路材Ｐを地中に連続的に引き込み埋設するに際し、地中に進入するバックリーマＲの如き引込案内部材に連繋される管路材Ｐにおける接続すべき前後端夫々を加熱溶融接続台車１０上の加熱溶融接続機構１５によって加熱溶融した後、その加熱溶融させた端部相互を突き合わせ状に接合し、その接合状態を保持したままで加熱溶融接続台車１０の移動に伴い引き込み埋設位置まで送り込み前進してその送り込み中で接合部分を固化させ、一方、送り込み終了後には後退し、送り込んだ管路材Ｐの後方で供給した別の管路材Ｐを同様に加熱溶融し、接合状態を保持して送り込み前進するものとしたからであり、また前後の管路材Ｐの端部相互を加熱溶融、突き合わせて固化接続し、管路材Ｐの引き込みに追随して前進移動し、送り込み後は後退移動する加熱溶融接続台車１０の前後方夫々に、前後に移動する複数台の支持移動台車３０、供給移動台車４０夫々をレール１上に配置したからであり、これによって、短尺状の単位材としての管路材Ｐを複連長尺化した状態で引き込み埋設位置まで連続供給でき、非開削工法による管路材Ｐの埋設作業を迅速化でき、非開削工法の利点を一層発揮させるのである。
【００３２】
また管路材Ｐの地中進入速度、管路材Ｐの長さは、前後の管路材Ｐの端部相互を固化接続するに必要な固化時間に対応しているから、ハンドホールＨ位置等の地中埋設位置に接続部位が到達する以前に接続部位の固化を終了でき、しかもその固化は確実、強固なものとなっていることで引き込み中でも、埋設後であっても離反、分離等が生じないのである。
【００３３】
支持移動台車３０、供給移動台車４０は加熱溶融接続台車１０の前方あるいは後方位置で複数台にしてレール１上に配置され、管路材Ｐの荷重負荷の状態で、管路材Ｐの移動に伴い追随移動・走行し、管路材Ｐの支持間隔に対応する間隔以下の長さの索条材３５，４５によって相互間が連繋されているから、接続構成された複連長尺状の管路材Ｐをその引き込み埋設位置まで確実に案内支持できるのである。またその引き込み埋設位置への接続固化状態の管路材Ｐの案内あるいは後方からの加熱溶融接続台車１０の加熱溶融接続機構１５位置への供給に際し、管路材Ｐを所定間隔毎に支持しているから、送り込む前方の管路材Ｐ更には固化接続させる予定の後方の管路材Ｐ夫々をそれらの自重等によって生じ得る撓み等を事前に回避でき、その固化接続部位の位置ずれ等をも生じさせず、確実な接続を担保するのである。
【００３４】
更に送り込み中で加熱溶融接続台車１０が前進移動するときには、この加熱溶融接続台車１０の前進移動に追随して順次に索条材４５によって牽引されて供給移動台車４０も前進し、逆に送り込み後で加熱溶融接続台車１０が後退移動するときには、この加熱溶融接続台車１０の後退移動に追随して順次に索条材３５によって牽引されて支持移動台車３０も後退するのであり、加熱溶融接続台車１０の前後の移動によっての管路材Ｐを支持したままで複数台の支持移動台車３０、供給移動台車４０夫々の追随移動を確実に行わせるのである。すなわち索条材３５，４５夫々によって、支持移動台車３０、供給移動台車４０夫々が独自に移動しても管路材Ｐを支持するときの所定の支持間隔長さ以下に支持移動台車３０相互間、供給移動台車４０相互間夫々の間隔を自動的に調整させて管路材Ｐを安定して支持させるのである。
【００３５】
加熱溶融接続台車１０における加熱溶融接続機構１５は、接続方向で前後する管路材Ｐ夫々を前後で対となるクランプ手段１７Ａ，１７Ｂによって握持し、このクランプ手段１７Ａ，１７Ｂの少なくともいずれか一方（１７Ｂ）を他方（１７Ａ）に対してスライドさせるようにしてあるから、その閉止で前後に配置の接続すべき管路材Ｐの端部を握持し、前後で位置決めしてしっかりと突き合わせ状とし、加熱溶融盤２１によって加熱溶融された管路材Ｐの端部相互を接合一体化できるのである。しかもクランプ手段１７Ａ，１７Ｂによって握持し、また突き合わせた状態のままで、加熱溶融接続台車１０が管路材Ｐの送り込みに追随して移動するから、前後の管路材Ｐの端部相互の突き合わせ状の接続部位の接続状態を保持しながらの管路材Ｐの送り込みを円滑に行え、その引き込み埋設位置に到達するまでに確実に固化させることができる。
【００３６】
また前後のクランプ手段１７Ａ，１７Ｂは、その解放で管路材Ｐの握持を解除するから、送り込み終了後で加熱溶融接続台車１０が後退復帰するとき、加熱溶融接続台車１０自体を円滑に後退移動でき、後方から供給される管路材Ｐ位置に後退復帰後ではそれらを握持した再度の加熱溶融、突き合わせ接続のために待機するのである。しかも加熱溶融接続台車１０、支持移動台車３０、供給移動台車４０等はレール１上で移動されるから、それらの前後方向への移動も円滑であり、送り込み、供給等の作業を迅速、円滑に行わせるのである。
【００３７】
そればかりでなく加熱溶融接続機構１５は、その高さ位置を昇降調整させる昇降手段２５を備えているから、加熱溶融接続機構１５自体の高さを位置決め調整させ、例えば作業現場において管路材Ｐの引き込み埋設方向に沿って高低差等が生じていてもこれに対応させ、その段差等を解消して管路材Ｐの支持高さを平坦化させ、前後で突き合わせる端部相互の位置合わせを確実にし、位置ずれ等を生じさせない。
【００３８】
支持移動台車３０、供給移動台車４０は、それらの台車本体３１，４１の上部で互いに傾斜して正面から見てほぼＶ字状に形成配置される左右のローラから成る引き入れ走行部３３あるいは供給走行部４３を備えているから、長尺状の管路材Ｐの引き込み埋設位置への送り込み、加熱溶融接続台車１０に対する管路材Ｐの供給等を円滑に行わせ、管路材Ｐの送り込み方向と逆に支持移動台車３０、供給移動台車４０夫々が前後に進退することとなっても、それらを阻害しないものである。
【図面の簡単な説明】
【図１】本発明の一実施の形態を示す作業手順において、引き込み埋設作業現場に管路材を搬入し、引き込み埋設作業に先立ち複数連の長尺状の所定長さに予め接続しておくときの概略側面図である。
【図２】同じくその保管時の概略側面図である。
【図３】同じく支持移動台車、供給移動台車夫々を加熱溶融接続台車の前方、後方に配置したときの概略側面図である。
【図４】同じく加熱溶融、固化接続するときの概略側面図である。
【図５】同じく引き込み埋設位置まで管路材を送り込むときの概略側面図である。
【図６】同じく送り込み後で加熱溶融接続台車が後方に復帰移動し、更に別の管路材を加熱溶融、固化接続するときの概略側面図である。
【図７】同じくその固化接続状態を保持しながら管路材を送り込むときの概略側面図である。
【図８】同じく引き込み埋設作業の遂行に伴い、別の管路材を接続させるべく加熱溶融接続台車が後方に復帰移動するときの概略側面図である。
【図９】同じく加熱溶融接続台車の概略斜視図である。
【図１０】同じく支持移動台車あるいは供給移動台車の概略斜視図である。
【符号の説明】
Ｃ…輸送車 Ｈ…ハンドホール
Ｐ…管路材 Ｒ…バックリーマー
Ｓ…ストックヤード
１…レール ２…作業ベース
３…規制索条
１０…加熱溶融接続台車 １１…台車本体
１２…走行車輪 １３…作業台
１４…走行ユニット
１５…加熱溶融接続機構 １６…昇降ベース
１７Ａ，１７Ｂ…クランプ手段 １８Ａ，１８Ｂ…揺動ボルト
１９…スライド手段 ２１…加熱溶融盤
２２…支持台 ２３…ハンドル
２５…昇降手段 ２６…リンク機構
２７…油圧シリンダー ２８…塔屋屋根
２９…クレーン具
３０…支持移動台車 ３１…台車本体
３２…走行車輪 ３３…引き入れ走行部
３５…索条材
４０…供給移動台車 ４１…台車本体
４２…走行車輪 ４３…供給走行部
４５…索条材[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention does not use a heat-sealable polyethylene resin pipe buried underground in order to protect and store such wiring when laying various wirings such as communication cables and power lines underground in a roadside zone or the like. When directly buried and installed by the open-cutting method, it is possible to continuously supply multiple polyethylene resin pipes as unit materials that are prepared in a short length while continuously connecting the ends together in an elongated shape at the burial site. The present invention relates to a method for continuously supplying a synthetic resin tube and a continuous supply device therefor.
[0002]
[Prior art]
Recently, when burying various pipes such as gas pipes and water pipes in the ground, excavating the road surface in order to meet social demands such as reducing environmental load, reducing road construction, shortening the construction period, etc. Various inductive non-cutting methods are being implemented to perform burial work without cutting without performing opencut work. In this non-digging method, the depth, direction, inclination, etc. of the drill head that penetrates into the ground from the starting point are controlled by electromagnetic induction from the ground surface as appropriate, so that the pilot hole moves forward to the reaching pit while forming the hole. After that, predetermined pipes connected to a pipe drawing jig attached to a drill head are drawn in and buried while loosening earth and sand by a back reamer rotating and retracting.
[0003]
When burying pipes by such a non-cutting method, if the pipes are flexible and continuous and long, the ends of the pipes of a predetermined length may be connected to the back reamer. With the retreat of the back reamer, the work of pulling and embedding the piping is completed.
[0004]
[Problems to be solved by the invention]
If each of the pipes to be buried is of a short length and is not formed integrally and continuously, it must be connected in advance so as to be in a continuous state. However, for example, a pipe material made of polyethylene resin buried to store and protect a communication cable or the like is used as a unit material, for example, in order to enable transportation by truck or the like to a site or the like. The diameter is about 300 mm and the length is about 8000 to 12000 mm. At the burial site, the end portions of the heat-fused pipe material as a unit material are welded and connected to each other so as to have a predetermined length. However, even if it is configured to be connected to a predetermined length, it cannot be rolled up because its flexibility is extremely small.For example, the work site is narrow, the traffic volume is large, and the work place can be secured. If it is not present, it is difficult to temporarily store it in a long shape.
[0005]
In addition, since the pipe material is set to a predetermined short length, each end of each of the plurality of pipe materials is heated and melted and butt-connected, but the solidified connection is butt-connected with each other. A certain amount of maintenance and waiting time is required. Therefore, when the pipe material is directly drawn in, the drawing-in operation must be interrupted every time corresponding to the standby time necessary for the connection portion to be solidified, and the solidification connection operation must be performed. As a result, such burial work is generally inefficient, and not only can the work time be wasted, but also when the connected parts to be melted are not solidified firmly, the pull-in resistance when drawing into the ground. They were separated and dismantled due to the action.
[0006]
Therefore, the present invention has been created in view of the above-described various existing circumstances. Even if the storage site for a long-formed pipe material or the like cannot be secured due to the small work site, the present invention may be applied to the ground. When buried inside, by connecting and feeding pipe materials sequentially in parallel with the drawing work, it can be performed continuously without interrupting the drawing work. Not only can the burial work be more convenient, but also the pipe material as a unit material can be firmly connected to each other and separated or separated by various resistances that can be caused by drawing in, etc. An object of the present invention is to provide a continuous supply method and a continuous supply device of a pipe material for underground burial, which is capable of burying and configuring a stable integrated long pipe.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, in the method of continuously supplying a pipe material for underground burying in the present invention, when the pipe material P is continuously drawn into the ground by a non-drilling method and is buried under the ground, After heating and melting each of the front and rear ends of the pipe material P connected to the entering retraction guide member (R) to be connected, the heated and melted ends are joined to each other in a butt shape, and the joined state is maintained. While being fed as it is, it is fed forward to the buried position and solidifies the joining part during the feeding, and after the feeding is completed, the other pipe material P fed back after the fed pipe material P is similarly heated and melted. Then, it is fed forward while maintaining the joined state.
The underground penetration speed of the pipe material P by the drawing-in guide member (R) and the length of the pipe material P to be sent are determined by the solidification time required for solidifying and connecting the ends of the pipe material P before and after feeding. Can be set accordingly.
Further, in the continuous supply device of underground pipe material used directly for carrying out the above-described continuous supply method, the pipe material P before and after being brought in and prepared at a predetermined unit length is connected to an end portion thereof. A heating and melting connection cart 10 which is solidified by being brought into a heated and molten state by abutting each other, moves forward following the drawing in of the pipe material P, and moves backward after being fed; A supporting moving vehicle 30 that is disposed in front of the heating and melting connecting vehicle 10 and moves back and forth so as to support and move the pipe material P formed in a long shape by being connected by the connecting vehicle 10 to the retracted and buried position. And a supply moving vehicle 40 arranged behind the heating and melting connection vehicle 10 and moving back and forth so as to support and move the pipe material P supplied as a unit material to the heating and melting connection vehicle 10. Heat melting connection Car 10, supporting mobile carriage 30, supplies the moving carriage 40 can be constructed by arranging the movement travel freely on the rails 1 laid in the work site along a retraction buried direction of the pipe material P.
The heating / fusion connection carriage 10 includes a carriage main body 11 having a traveling wheel 12 on a bottom surface so as to travel on the rail 1, a heating / fusion connection mechanism 15 mounted on the carriage main body 11, and a heating / fusion connection mechanism 15. The heating / fusing connection mechanism 15 comprises a pair of clamping means 17A and 17B which are paired before and after gripping and fixing each of the pipe members P arranged back and forth in the connection direction. By sliding at least one (17B) of the clamping means 17A and 17B with respect to the other (17A), the end of the pipe material P is brought into a butt shape, and is heated and melted. The end portions of the pipe material P are joined and integrated.
The heating / melting connection mechanism 15 is arranged at a substantially central position of the work table 13 which is the bogie main body 11 of the heating / melting connection cart 10. Clamping means 17A, 17B arranged in the front and rear so as to be closed and closed in a state surrounding the pipe material P in the form of a half ring that swings up and down so as to surround the pipe material P, and the rear side in the drawing direction of the pipe material P The slide means 19 for sliding the clamp means 17B arranged on the front side with respect to the clamp means 17A arranged on the front side, and the front and rear clamp means 17A, 17B are disposed so as to be able to advance and retreat between the front and rear clamp means 17A, 17B. It is possible to provide a heat melting plate 21 which abuts on the end of the pipe material P gripped by each of the pipes 17B and brings it into a molten state.
A plurality of supporting moving carts 30 are arranged on the rail 1 at a position in front of the heating / melting connecting cart 10 and support the solidified and connected elongated pipe material P to form a pipe. In a state where the load of the road material P is applied, the pipe material P follows and moves with the movement of the pipe material P, and is connected to each other by a cord material 35 having a length equal to or less than an interval corresponding to the support interval. Can be configured.
A plurality of the supply moving carts 40 are arranged on the rail 1 at a position behind the heating / melting connection cart 10 and have a length equal to or less than an interval corresponding to a support interval of the pipe material P as a unit material to be solidified and connected. The cable members 45 provided can be configured to be connected to each other.
Further, the supporting moving vehicle 30 and the supply moving vehicle 40 are composed of bogie main bodies 31 and 41 having running wheels 32 and 42 on the bottom surface, and are inclined substantially above the bogie main bodies 31 and 41 so as to be substantially V when viewed from the front. It can be configured to include a pull-in traveling section 33 or a supply traveling section 43 composed of left and right rollers formed and arranged in a character shape.
[0008]
In the continuous supply method and the continuous supply device for the underground pipe material according to the present invention configured as described above, the front and rear end portions are formed into a long shape by heat melting and solidification connection between the front and rear ends. The pipe material P is connected to the lead-in guide member (R) to enter the ground together with the travel of the pull-in guide member (R). During the retraction, the pipe material P is further attached to the end of the pipe material P in the final portion. Is heated and melted, solidified and connected while moving the pipe material P, so that the drawing and embedding work is performed continuously and continuously without interruption.
The underground penetration speed of the pipe material P and the length of the pipe material P correspond to the solidification time required for solidifying and connecting the end portions of the pipe materials P arranged before and after, and the underground burying position is obtained. The solidification of the connection portion is terminated before the connection portion reaches the contact portion, and separation or separation or the like does not occur after burying.
The supporting movable carriage 30 disposed in front of the heating and melting connection carriage 10 guides and supports the connected and configured multiple continuous pipe material P to a buried position, and supplies the rear arrangement of the heating and fusion connection carriage 10. The moving trolley 40 continuously supplies and supports the pipe material P of the unit material to be connected to the heat melting connection trolley 10 side. The pipe material P is drawn in by the forward movement of the heating and melting connection carriage 10 following the forward movement of the support moving carriage 30 following the drawing-in of the drawing-in guide member (R), and the forward movement of the supply moving carriage 40 following this. Guide to the buried position. In addition, the retraction movement of the support moving vehicle 30 accompanying the reversing movement of the heating / melting connection vehicle 10 after the feeding, and the retreat movement of the supply moving vehicle 40 sequentially pushed by the heating / melting connection vehicle 10 include the heating / melting connection vehicle 10 from behind. Is supported.
The heating / melting connection mechanism 15 in the heating / melting connection cart 10 is configured such that the front end of the pipe material P as a unit material supplied from the rear in the drawing and embedding direction is connected to the rear end of the pipe material P fed forward. It is heated and melted, connected in a butt shape and solidified integrally. At this time, the movement of the heating and melting connection carriage 10 itself follows the feeding of the pipe material P while maintaining the connection state of the butted connection portions between the front and rear ends of the pipe material P, and moves to the retracted embedded position. Allow to solidify before reaching.
The closing and closing of the front and rear clamping means 17A and 17B of the heating and melting connection mechanism 15 are positioned and gripped at the time of heating and melting each of the front and rear pipe material P ends, at the time of butt connection, etc. When returning, the heating and melting connection cart 10 itself is moved smoothly. The slide between the one (17B) and the other (17A) in the front and rear clamping means 17A and 17B is performed when the heating and melting plate 21 heats and melts, when the ends are connected and solidified, and the like. In addition to the fact that the support movable carriage 30, the supply movable carriage 40 and the like are moved on the rail 1, the pipe material P is slid forward and backward to position.
The elevating means 25 adjusts the position of the heating and melting connection mechanism 15 so as to correspond to, for example, a height difference that may occur along the direction in which the pipe material P is pulled and buried at the work site, and eliminates the difference to remove the pipe material P. Flatten the support height.
A cable member 35 connected between the supporting moving vehicles 30 and further to the front part of the heating and melting connection vehicle 10, and a cable member 45 connected between the supply moving vehicles 40 and further to the rear part of the heating and melting connection vehicle 10. Even if each of the support moving vehicle 30 and the supply moving vehicle 40 moves independently, each of the support moving vehicles 30 and the supply moving vehicle 40 is adjusted to be equal to or less than the support interval length for supporting the pipeline material P, thereby stably supporting the pipeline material P.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings. Reference numeral P shown in the drawing is linked to a back reamer R that moves backward while excavating a buried hole along a pilot hole in a non-cutting method. The pipe material is a pipe material that is drawn and buried in the ground, and the pipe material P is made of, for example, a polyethylene resin having a diameter of about 300 mm. The pipe material P carried to the burial site with a predetermined length of, for example, about 8000 to 12000 mm is abutted with the ends when heated and melted at the ends when they are arranged one after the other in the burying direction. As a result, it is solidified and connected, and is buried in a state of being elongated.
[0010]
Therefore, each pipe material P as a unit material to be carried in and prepared at a predetermined unit length is solidified and connected by abutting the ends thereof in a heated and melted state, thereby drawing in the pipe material P. One heating and melting connection carriage 10 that moves following the above, supports and embeds the pipe material P formed in a double continuous elongated shape by being connected by the heating and fusion connection carriage 10. Each of the plurality of supporting movable carts 30 for moving to the location and the plurality of supplying movable carts 40 for supporting and moving the pipeline material P when supplying the pipeline material P as a unit material to the heating and melting connection cart 10 are disposed at the burying work site. It is arranged so as to be able to move and run on a rail 1 laid on the vehicle. Further, the running interval of the heating / melting connection cart 10 itself is a time required for connecting the next pipe material P to the end of the pipe material P to be drawn and buried until the connection portion is sufficiently solidified. The maximum advance position is set by, for example, the regulating cable 3 from the non-movable work base 2 installed at the rear position.
[0011]
As shown in FIG. 9, the heating / fusing connection cart 10 includes a bogie main body 11 provided with running wheels 12 on the bottom surface so as to travel on the rail 1, a heating / fusing connection mechanism 15 mounted on the bogie main body 11, Lifting means 25 for raising and lowering the height position of the heating and melting connection mechanism 15. The heat fusion connection mechanism 15 has a pair of clamps 17A and 17B before and after gripping and fixing each of the pipe members P arranged one after another in the connection direction, and at least one of the clamps 17A and 17B. One end (17B) is slid with respect to the other (17A) so that the ends of the pipe material P are abutted, and the ends of the pipe material P before and after being heated and melted are joined to each other. It is designed to be integrated.
[0012]
The bogie main body 11 has a traveling wheel 12 mounted on a bottom surface of a substantially rectangular work table 13 on which a worker for carrying out the work of connecting the pipe material P enters, and which forms a sufficient work area for performing the work. The rail 1 is formed to be long along the laying direction of the rail 1 by, for example, incorporating a steel member, a steel plate, or the like. The bogie main body 11 can be self-propelled by, for example, a hydraulically driven traveling unit 14 mounted on a work table 13 if necessary.
[0013]
The heating / melting connection mechanism 15 is arranged at a substantially central position of the work table 13 which is the bogie main body 11, and swings up and down on an elevating base 16 which is raised and lowered by an elevating means 25 so as to surround the periphery of the pipe material P. A front and rear clamp means 17A, 17B, which are in the form of a half ring which can be opened and closed, and which can be closed by screwing with rocking bolts 18A, 18B pivotally supported on this half ring member, A slide means 19 for sliding the clamp means 17B arranged on the rear side in the direction of drawing in the material P with respect to the clamp means 17A arranged on the front side, and the slide means 19 is movable between the front and rear clamp means 17A and 17B. A heating and melting board 21 is provided, which is in contact with the end of the pipe material P held by the front and rear clamping means 17A and 17B, respectively, to bring it into a molten state. To have.
[0014]
The lifting base 16 is set to a supply height position of the pipe material P to be buried by being adjusted to a predetermined height position above or below the work table 13 by a lifting means 25 described later. Are arranged at a predetermined position of the worktable 13 in an opening formed in a hollow shape, and on the upper surface thereof, clamping means 17A, 17B which are opposed to each other along the front and rear in the supply direction of the pipe material P. Is arranged.
[0015]
The clamping means 17A and 17B are formed in a substantially donut ring shape which is gripped by surrounding the vicinity of the end of the pipe material P, and is divided into upper and lower halves as shown in FIG. The upper portion is pivotally supported on the rear side with respect to the lower portion so as to be swingably openable and closable, and swinging bolts 18A and 18B, each of which has an open end on the front side swingably supported on the lower portion, are engaged with the upper portion. , And closed by screwing. Then, the upper part is swung down with respect to the pipe material P inserted and arranged in the upper and lower parts in the open state, and after being surrounded by the entire upper and lower parts, it is gripped and fixed by screwing with the swing bolts 18A and 18B. It is. The movable clamp 17B located on the rear side in the supply direction of the pipe material P slides back and forth with respect to the fixed clamp 17A located on the front side by the slide unit 19 provided on the work table 13. It is designed to advance with respect to the clamping means 17A at the time of cutting, heating and melting, and at the time of solidification connection, and to maintain its position. The slide means 19 slides the clamp means 17B mounted on, for example, a rail by a screw feed structure, a rack / pinion structure, an oil / pneumatic cylinder drive structure, or the like.
[0016]
As shown in the figure, the heating / melting disk 21 is provided on a handle 23 swingably supported and connected to a support table 22 disposed at a lateral position in a gap between the front and rear clamping means 17A and 17B. It has a disk shape with the heater surface to be heated on both sides. Then, in a state where the heating / melting disk 21 is disposed in the gap between the front and rear clamping means 17A and 17B, the pipe members P held by the fixed clamping means 17A and the movable clamping means 17B, respectively. Are brought into contact with both side surfaces of the heating / melting disk 21 so that each of the ends is in a molten state. After the melting, the rear pipe material P is temporarily removed by the movable clamping means 17B. It is evacuated and slid again to the fixed clamping means 17A to bring the ends of the pipe material P into contact with each other and temporarily maintain the contact state. Prior to the heating and melting work of each end of the pipe material P, a flattening work is performed on each end edge of the pipe material P. A cutting means for cutting the surface to flatten the surface is separately provided (not shown). Further, when the pipe material P itself is continuously formed in the factory and then cut into an appropriate length in consideration of transportation to the site and carrying in, for example, a sequential number is assigned to a specific position so that the cut ends can be distinguished from each other. The numbers are displayed in correspondence, and by sequentially connecting the numbers so as to correspond to each other, it is considered that the abutting surfaces according to the partial thickness variation that may occur during manufacturing match.
[0017]
As shown in FIG. 9, the heating and melting board 21 is suspended and moved by a crane 29 movably mounted on a tower roof 28 formed above the elevating base 16 provided with, for example, clamping means 17A and 17B. When it is not necessary, for example, it is stored in a storage box 24 provided behind the movable clamp means 17B, and when used, it is suspended and moved at a predetermined position between the clamp means 17A and 17B by the crane 23 when used. It is to be done.
[0018]
Elevating means 25 for elevating the elevating base 16 provided with the clamping means 17A, 17B is disposed in an opening formed in the work table 13 and viewed from the side of the arrangement connected to the bottom surface of the elevating base 16. The elevating base 16 is moved up and down by extending and retracting a link mechanism 26, which is substantially crossed in an X-shape, by the movement of the cylinder rod of the hydraulic cylinder 27. By adjusting the elevation position of the elevation base 16, the overall level due to steps or other high and low portions occurring at the work site can be adjusted and set according to the supply and feeding levels of the pipe material P, and The road material P can be smoothly fed.
[0019]
On the other hand, as shown in FIGS. 1 to 8, a plurality of support moving carts 30 are arranged on the rail 1 at a position in front of the heating and melting connecting cart 10, and are solidified and connected to form a long strip. The pipe member P is supported and guided to the retracted and embedded position without being extremely bent. In other words, when the load of the pipe material P is applied by supporting the pipe material P, the pipe material P follows and moves along with the movement of the pipe material P. The distance between the support moving vehicles 30 and the space between the heating and melting connection vehicles 10 is not increased more than the distance corresponding to the supporting distance suitable for supporting the previous pipe material P without bending, that is, the distance between the supporting moving vehicles 30 and the supporting distance is equal to or less than the supporting distance. The lines are connected to each other as long as the distance between them is regulated by a rope member 35 such as a flexible rope or chain so as to have a length.
[0020]
For this reason, as shown in FIG. 10, the supporting movable trolley 30 has a flat frame structure composed of, for example, a square pipe material, a steel plate, and the like, and has a trolley body 31 provided with running wheels 32 on the bottom surface; And a pulling-in traveling section 33 composed of left and right rollers which are inclined and formed substantially in a V-shape when viewed from the front at the upper part of the base 31. The bogie main body 31 itself is composed of, for example, upper and lower rectangular upper frames arranged in two vertical stages via columns on a planar large rectangular lower frame, and is bridged between the left and right portions of the upper frame. The pull-in travel section 33 is formed and arranged on the support beam.
[0021]
Also, as shown in FIGS. 1 to 8, a plurality of supply moving carts 40 are arranged on the rail 1 at a position behind the heating and melting connection cart 10, and are solidified and connected, for example, a short length as a unit material. The pipe material P is supported so as to be guided to a connection position in the heat fusion connection carriage 10 without bending. At the time of supporting, at the time of retraction burial work, prior to the work, there may be a case where a plurality of pipe materials P having a unit material length are connected in advance so as to have a predetermined length. In order to reliably support each pipe material P of unit length before connection without bending, the distance between the supply moving vehicles 40 and further between the heating and melting connection vehicles 10 does not become larger than the distance corresponding to the supporting distance. As described above, that is, the spaces are regulated by the rope members 45 such as flexible ropes and chains so that the lengths are equal to or less than the support intervals. As shown in FIG. 10, the supply moving vehicle 40 itself has the same structure as that of the supporting moving vehicle 30 and is inclined at an upper part of a carriage body 41 provided with running wheels 42 and viewed from the front. And a supply traveling unit 43 including left and right rollers formed and arranged in a substantially V-shape, and a detailed description thereof will be omitted.
[0022]
Each of the supporting moving vehicle 30 and the supply moving vehicle 40 is freely movable on the rail 1, and the length of the pipe material P when supported to be supplied to the heating and melting connecting vehicle 10. Accordingly, the distance between the supply moving vehicles 40 is regulated, and the distance between the supporting moving vehicles 30 is regulated so as to support the continuous pipe material P when the wire is buried. Further, when the pipe material P is moved in a state where a load is applied by supporting the pipe material P, the pipe material P itself is moved by pulling in, supplying, or the like of the pipe material P. Is moved by the rope members 35 and 45 interconnecting each other, so that the support movable carriage 30, the supply movable carriage 40, and the like are also moved.
[0023]
Next, an operation procedure when the pipe material P is pulled and buried will be described with reference to FIGS. 1 to 8. The work site where the pipe material P is to be drawn and buried is manufactured at a factory and has a predetermined unit length. The pipe material P thus cut is carried in by the transport vehicle C and stored in the stock yard. It is desirable that the pipeline materials P stored at this time are arranged in accordance with the order of manufacture and cutting, and the supply and connection of the pipeline materials P during the retracting and embedding work correspond to the order of manufacture and cutting. (See FIG. 1).
[0024]
Prior to the start of the retraction burying work, the pipe material P as a unit material having a predetermined length is heated and melted and connected by the heat and melt connection mechanism 15 of the heat and melt connection cart 10 at the work site in consideration of promoting the work progress. While being supported by the supporting movable vehicle 30, the supply movable vehicle 40, and the like arranged in the front-rear direction of 10, a plurality of units in a state in which a plurality of units are collected in advance so as to have a length in consideration of a margin at the time of retraction work. It is solidified and connected as a pipe material P having a length, and is temporarily stored in a stock yard S (see FIGS. 2 and 3).
[0025]
At the time of the retracting and embedding work, the pipe material P having a plurality of continuous lengths is provided on the plurality of supporting movable carriages 30 arranged in front of the heating and melting connection cart 10, and a plurality of supply pipes similarly arranged behind the heating and melting connection cart 10. The pipe material P having a plurality of continuous lengths is set on the moving carriage 40, and the rear end of the former is fixed on the heating / melting connection mechanism 15 on the elevating base 16 whose height is adjusted by the elevating means 25. The front end of the latter is gripped by the movable clamping means 17B (see FIG. 4). Next, the rear pipe member P is brought into contact with the front pipe member P by the forward movement of the movable clamp means 17B, and is heated and melted to be solidified and connected. At this time, the connection ends of the pipe material P are arranged in the order of production and cutting, and the connection end surfaces are ground to flatten the surfaces, and are brought into contact with both side surfaces of the heat melting plate 21 to be heated and melted. After that, the heating / melting platen 21 is retracted, and the front end of the rear pipe material P abuts against the rear end of the front pipe material P by the movement of the movable clamp means 17B again, and the retreat movement of the clamp means 17B is performed. Hold it by blocking.
[0026]
On the other hand, the front end of the pipe material P arranged in front is connected to a back reamer R arranged in relation to the side wall opening of the hand hole H, which is a retracted embedding position, for example, and retreats along a pilot hole excavated in advance. The pipe material P is drawn in by the back reamer R (see FIGS. 5 to 8). The supporting moving vehicle 30 and the heating / fusion connecting vehicle 10 also move following the pipeline material P that is moved by the retraction and embedding of the pipeline material P. The end portions of the respective road materials P are kept in abutting shape, and the solidified connection work after the fusion is continued while moving (see FIGS. 4 and 6). At this time, the drawing speed, the length of the pipe material P having a plurality of continuous lengths prepared in advance, and the like are, for example, the heating and melting temperature of the pipe material P itself, which is a polyethylene resin pipe having a diameter of about 300 mm, is 200 ± 5. In consideration of the fact that the temperature is about ° C. and that the solidification takes about 40 minutes when the parts are joined in that state, the setting is adjusted so as to correspond to the time required for the solidification. Conversely, for example, in 40 minutes required for solidification, the drawing speed and the pipe are set so that the rear end of the pipe member P to be connected rearward reaches the rear end position of the pipe member P in the front position before moving. The length of the road material P is set, and the area where the heating and melting connection carriage 10 moves in the operation time required for the melting and solidification becomes the melting operation section. That is, this melting work section moves from the start start point where the molten ends of the front and rear pipe materials P are butted against each other on the heating and melting connection cart 10 while maintaining the butting, and the connection ends are sufficiently connected. It is an area until the end point where it is released after being solidified and immediately retreats and returns.
[0027]
Next, when the pipe material P is sent forward and the pipe material P arranged rearward to be connected to the pipe material P is sent and the connection operation is continued and sufficiently solidified, the heating and melting connection cart 10 is connected to the heating and melting connection carriage 10. After the front and rear clamping means 17A and 17B in the mechanism 15 release the pipe material P and lower the elevating base 16 by the elevating means 25, for example, the operator retreats to the rear position before the movement by a direct moving operation. It moves and returns (see FIGS. 5 and 8), and again adjusts and raises the height position of the next pipe material P supplied from the rear to similarly cut and flatten the end surface. The heating, melting, and solidification connections are performed (see FIG. 6). Then, while maintaining the solidified connection state, the heated and melted connection cart 10 is moved with the support moving cart 30 via the cord material 35 and the supply moving cart 40 via the cord material 45 as needed, and is pulled in. The pipe material P is sequentially fed to the buried position side (see FIGS. 7 and 8).
[0028]
When the heating and melting connection cart 10 is moved, each of the supporting movable carts 30 disposed in front of the heating and melting connection cart 10 is further connected to the heating and melting connection cart 10 via the cord material 35. When the pipe material P is sent to the retracted and buried position while supporting the pipe material P, the pipe material P is pulled by the cable members 35 from the front arrangement and moves sequentially, and finally is heated and fused. The carriage 10 moves, and the distance between the group of support movable carriages 30 arranged in front is reduced with the movement of the heating and melting connection carriage 10. Conversely, when the heating and melting connection carriage 10 moves rearward, it moves sequentially rearward from the immediately preceding support movement carriage 30, and from the support movement carriage 30 disposed immediately in front of the carriage movement carriage 30, by the cable members 35 therebetween. It is towed and moves backward sequentially.
[0029]
In addition, since the supply moving carts 40 arranged behind the heating and melting connection cart 10 are connected to each other and further to the heating and melting connection cart 10 via the cord members 45, the pipes P are supported. When supplying the pipe material P to the heating and melting connection carriage 10, the supply moving carriage 40 disposed rearward moves sequentially and finally moves to the position of the heating and fusion connection carriage 10, and after the heating and melting processing. With the movement of the heating and melting connection vehicle 10 moving forward while maintaining the solidified connection state, the heating and melting connection vehicle 10 sequentially moves forward similarly from the heating and melting connection vehicle 10 side. Along with this, each of a group of supply moving carts 40 arranged rearward is sequentially pulled by the rope members 45 interconnecting each other, and supports the pipeline member P at every length interval of the rope members 45. When the heating and melting connection cart 10 moves backward after the feeding of the pipe material P to the retracted burying position is completed, the heating and melting connection cart 10 is pushed from the supply moving cart 40 side arranged immediately behind and behind. Then, the rear supply moving carriage 40 is also sequentially pushed and sequentially moves rearward.
[0030]
【The invention's effect】
Since the present invention is configured as described above, even if the work site is narrow and it is not possible to secure a storage place for the pipe material P and the like connected in a double-long form, it is drawn and buried in the ground. At this time, the pipe work P is sequentially fed in while being connected in parallel with the drawing work, so that the drawing work can be continuously performed without interruption. Further, not only the convenience of the burying work of the pipe material P by the non-cutting method can be attained, but also various kinds of pipe material P as a unit material which can be solidified and connected to each other and which may be caused by drawing in. Even if the pipe materials P are not separated or separated from each other even by the drawing pressure, the resistance, or the like, a stable integrated long pipe can be embedded.
[0031]
That is, in the present invention, when the pipe material P is continuously drawn and buried in the ground by the non-cutting method, the connection in the pipe material P connected to the drawing guide member such as the back reamer R entering the ground. After each of the front and rear ends to be heated and melted by the heating and melting connection mechanism 15 on the heating and melting connection carriage 10, the heated and melted ends are joined in abutting manner, and the heat and fusion connection is maintained while maintaining the joined state. With the movement of the carriage 10, it is fed forward to the retracted and buried position and solidifies the joint portion during the feeding, while it is retracted after the feeding is completed, and another pipe material P supplied behind the fed pipe material P is fed. Is heated and melted in the same manner, and is fed forward while maintaining the joined state. Further, the end portions of the front and rear pipe materials P are heated and melted, butted and solidified and connected to form a pipe material. A plurality of supporting moving vehicles 30 and a plurality of supply moving vehicles 40 moving forward and backward are arranged on the rail 1 at the front and rear of the heating and melting connection vehicle 10 which moves forward following the drawing of the heating and melting and then moves backward after the feeding. As a result, the pipe material P as a short unit material can be continuously supplied to the retracted and buried position in a state where the pipe material P is elongated in a double row, and the burying work of the pipe material P by the non-cutting method is speeded up. It is possible to make full use of the advantage of the non-cutting method.
[0032]
Further, since the underground penetration speed of the pipe material P and the length of the pipe material P correspond to the solidification time required for solidifying and connecting the end portions of the front and rear pipe materials P, the position of the handhole H The solidification of the connecting part can be completed before the connecting part reaches the underground burying position, etc., and the solidification is reliable and strong, so even if it is retracted, even after burying, separation, separation, etc. Does not occur.
[0033]
A plurality of support moving carts 30 and supply moving carts 40 are provided on the rail 1 at a position in front of or behind the heating and melting connection cart 10 and are moved on the rails 1 under the load of the pipe material P. Accordingly, the pipes follow and move, and are connected to each other by the cord members 35 and 45 having a length equal to or less than the interval corresponding to the support interval of the pipe material P. It is possible to reliably guide and support the road material P to its retracted and buried position. In addition, when guiding the pipe material P in the connected and solidified state to the retracted burying position or supplying the pipe material P to the position of the heating / melting connection mechanism 15 of the heating / melting connection cart 10 from behind, the pipe material P is supported at predetermined intervals. Because of this, it is possible to avoid in advance bending or the like that can occur due to their own weight or the like of the front pipe material P to be fed and further the rear pipe material P that is to be solidified and connected, and also to prevent displacement of the solidified connection portion and the like. It does not occur and ensures a secure connection.
[0034]
Further, when the heating and melting connection carriage 10 moves forward during feeding, the supply moving carriage 40 is also towed forward by the cable members 45 sequentially following the forward movement of the heating and fusion connection carriage 10, and conversely, When the heating and melting connection carriage 10 moves backward, the support melting carriage 30 is also retracted by being sequentially towed by the cord members 35 following the backward movement of the heating and melting connection carriage 10, and the heating and melting connection carriage 10 The following movement of each of the plurality of support moving vehicles 30 and the supply moving vehicles 40 is surely performed while the pipe material P is supported by the forward and backward movement. In other words, even if the support moving cart 30 and the supply moving cart 40 move independently by the cable members 35 and 45, respectively, the distance between the support moving carts 30 is less than the predetermined support interval length for supporting the pipe material P. The distance between the supply moving carts 40 is automatically adjusted to stably support the pipe material P.
[0035]
The heating / fusion connection mechanism 15 in the heating / fusion connection carriage 10 grips each of the pipe members P which are front and rear in the connection direction by a pair of front and rear clamps 17A and 17B, and at least one of the clamps 17A and 17B. Since (17B) is slid with respect to the other (17A), the closing thereof grasps the end of the pipe material P to be connected, which is disposed in front and rear, and is positioned in front and rear to firmly abut against each other. Thus, the ends of the pipe material P heated and melted by the heat melting board 21 can be joined and integrated. In addition, the heating and melting connection carriage 10 moves following the feeding of the pipe material P while being gripped and abutted by the clamp means 17A and 17B. The pipe material P can be smoothly fed while maintaining the connection state of the butt-shaped connection portions, and can be surely solidified before reaching the retracted embedded position.
[0036]
Further, since the front and rear clamping means 17A and 17B release the gripping of the pipe material P by the release thereof, when the heating and melting connection cart 10 is retracted and returned after the feeding is completed, the heating and melting connection cart 10 itself is smoothly retracted. After returning to the position of the pipe material P supplied from the rear, it can move, and stands by for reheating, melting, and butt-connecting while gripping them. In addition, since the heating and melting connection cart 10, the support moving cart 30, the supply moving cart 40, and the like are moved on the rail 1, the movement in the front-rear direction is also smooth, and the work of feeding, feeding, etc. is performed quickly and smoothly. It is done.
[0037]
In addition, since the heating / fusing connection mechanism 15 is provided with the elevating means 25 for raising / lowering the height position, the height of the heating / fusing connection mechanism 15 itself is adjusted by positioning. If there is a difference in height along the direction of the burial, the height of the pipe material P is reduced by eliminating the difference in level, and the supporting height of the pipe material P is flattened. And ensure that no misalignment occurs.
[0038]
The supporting movable carriage 30 and the supply movable carriage 40 are provided at the upper part of the carriage main bodies 31 and 41 so as to be inclined with respect to each other and formed in a substantially V-shape as viewed from the front, and are provided with a pull-in traveling section 33 composed of left and right rollers or a supply traveling section. Because of the provision of the portion 43, the feeding of the long pipe material P to the retracted and buried position, the supply of the pipe material P to the heating and melting connection cart 10 and the like are smoothly performed, and the feeding direction of the pipe material P Conversely, even if the support movable carriage 30 and the supply movable carriage 40 move back and forth, they do not hinder them.
[Brief description of the drawings]
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a work procedure showing an embodiment of the present invention, in which a pipe material is carried into a retraction burial work site, and is connected to a plurality of elongated predetermined lengths before the retraction burying work. It is a schematic side view at the time.
FIG. 2 is a schematic side view of the same during storage.
FIG. 3 is a schematic side view when the supporting movable carriage and the supply movable carriage are respectively arranged in front of and behind the heating and melting connection carriage.
FIG. 4 is a schematic side view when the same heating and melting and solidification connection are performed.
FIG. 5 is a schematic side view when the pipe material is sent to the retracted and buried position.
FIG. 6 is a schematic side view showing a state in which the heating / fusing connection carriage returns to the rear after the feeding, and further heat-fuses and solidifies and connects another pipe member.
FIG. 7 is a schematic side view when the pipe material is fed while maintaining the solidified connection state.
FIG. 8 is a schematic side view showing a state in which the heating and melting connection carriage returns to the rear to connect another pipe material while performing the retraction and embedding work.
FIG. 9 is a schematic perspective view of the heating and melting connection cart.
FIG. 10 is a schematic perspective view of a supporting moving vehicle or a supplying moving vehicle.
[Explanation of symbols]
C: Transport vehicle H: Handhole
P… Pipe material R… Back reamer
S… Stockyard
1 ... rail 2 ... work base
3 ... Regulated cable
10: heating and melting connection trolley 11: trolley body
12 ... running wheels 13 ... workbench
14… Traveling unit
15: Heat melting connection mechanism 16: Elevating base
17A, 17B: Clamping means 18A, 18B: Swing bolt
19 ... Slide means 21 ... Heat melting machine
22 ... support stand 23 ... handle
25 lifting means 26 link mechanism
27 ... Hydraulic cylinder 28 ... Tower roof
29 ... Crane equipment
Reference numeral 30: Supporting moving cart 31: Cart body
32: running wheel 33: pull-in running section
35 ... Rope material
40: supply moving trolley 41: trolley body
42 ... running wheels 43 ... supply running section
45 ... Rope material