【書類名】明細書
【発明の名称】固化材圧送ラインの分配装置、ならびに地盤の撹拌混合処理装置
【特許請求の範囲】
【請求項１】上流側圧送管路から圧送される固化材を、基端入口が並列する複数の下流側圧送管路のそれぞれに分配供給する固化材圧送ラインの分配装置であって；
前記複数の下流側圧送管路を、これらの各基端入口と結ぶ距離が実質的に同一となる位置にある回転軸心周りに、共通的に回転するように構成するか、前記上流側圧送管路を前記回転軸心周りに回転するように構成するか、あるいは前記複数の下流側圧送管路が前記回転軸心周りに共通的に回転し、且つ前記上流側圧送管路がこれら複数の下流側圧送管路より低速となる差速をもって同方向に前記回転軸心周りに回転するように構成し、
前記回転軸心周りの基端入口の軌跡円内に前記上流側圧送管路の先端出口が臨むように位置決めし、前記上流側圧送管路の先端出口と前記複数の下流側圧送管路の各基端入口とを連通可能に接続し、
前記下流側圧送管路が前記回転軸心周りに共通的に回転すること、前記上流側圧送管路が前記回転軸心周りに回転すること、あるいは前記複数の下流側圧送管路が前記回転軸心周りに共通的に回転し、且つ前記上流側圧送管路がこれら複数の下流側圧送管路より低速となる差速をもって同方向に前記回転軸心周りに回転することによって、前記上流側圧送管路を通る固化材が順次前記下流側圧送管路に供給されるように構成したことを特徴とする固化材圧送ラインの分配装置。
【請求項２】先端出口が並列する複数の上流側圧送管路のうち少なくとも一つの管路から圧気に乗せて圧送される粉体系固化材をならびに少なくとも一つの管路から圧気を供給し、基端入口が並列する複数の下流側圧送管路のそれぞれに前記粉体系固化材を分配供給する固化材圧送ラインの分配装置であって；
前記複数の下流側圧送管路を、これらの各基端入口と結ぶ距離が実質的に同一となる位置にある回転軸心周りに、共通的に回転するように構成し、
前記回転軸心周りの基端入口の軌跡円内に前記各上流側圧送管路の各先端出口が臨むように位置決めし、前記各上流側圧送管路の各先端出口と前記複数の下流側圧送管路の各基端入口とを連通可能に接続し、
前記上流側圧送管路を通る粉体系固化材が、前記下流側圧送管路の前記回転軸心周りの共通的回転により順次前記下流側圧送管路に供給され、かつ下流側圧送管路の基端入口が圧気が供給される上流側圧送管路に連通した時点で圧気が当該下流側圧送管路内の粉体系固化材に対して作用されるように構成したことを特徴とする固化材圧送ラインの分配装置。
【請求項３】先端出口が並列する複数の上流側圧送管路のそれぞれから圧送される固化材を、基端入口が並列する複数の下流側圧送管路のそれぞれに分配供給する固化材圧送ラインの分配装置であって；
前記複数の下流側圧送管路を、これらの各基端入口と結ぶ距離が実質的に同一となる位置にある回転軸心周りに、共通的に回転するように構成し、
前記回転軸心周りの基端入口の軌跡円内に前記各上流側圧送管路の各先端出口が臨むように位置決めし、前記各上流側圧送管路の各先端出口と前記複数の下流側圧送管路の各基端入口とを連通可能に接続し、
前記各上流側圧送管路を通る各固化材が、前記下流側圧送管路の前記回転軸心周りの共通的回転により順次前記下流側圧送管路に供給されるように構成したことを特徴とする固化材圧送ラインの分配装置。
【請求項４】前記複数の上流側圧送管路も前記回転軸心周りに共通的に回転するように構成されており、これら複数の上流側圧送管路を前記複数の下部管路群より低速となる差速をもって同方向に前記回転軸心周りに回転させるように構成した請求項２または３記載の固化材圧送ラインの分配装置。
【請求項５】上流側圧送管路のうち少なくとも一つの本管路から圧気に乗せて圧送される粉体系固化材をならびに副管路から圧気を供給し、並列する複数の下流側圧送管路のそれぞれに前記粉体系固化材を分配供給する固化材圧送ラインの分配装置であって；
前記複数の下流側圧送管路を、これらの各基端入口と結ぶ距離が実質的に同一となる位置にある回転軸心周りに、共通的に回転するように構成し、
前記回転軸心周りの基端入口の軌跡円内に前記本管路の先端出口が臨むように位置決めし、前記本管路の先端出口と前記複数の下流側圧送管路の各基端入口とを連通可能に接続し、かつ前記副管路の先端出口は前記回転に関係なく常時前記複数の下流側圧送管路の各基端入口と連通する状態で接続し、
前記本管路を通る粉体系固化材が、前記下流側圧送管路の前記回転軸心周りの共通的回転により順次前記下流側圧送管路に供給され、かつ前記副管路を通して圧気が当該下流側圧送管路内の粉体系固化材に対して作用されるように構成したことを特徴とする固化材圧送ラインの分配装置。
【請求項６】撹拌翼を有し、外部に開口する複数の吐出口を有し、かつこれらに連通し固化材を通す複数の下流側圧送管路を有する撹拌ロッドと、この撹拌ロッドを地盤内に貫入した状態で回転軸心周りに回転させる回転駆動手段とを備えるとともに、
前記下流側圧送管路に対して、固化材を圧送する上流側圧送管路が設けられ、
前記回転軸心は、前記複数の下流側圧送管路の各基端入口と結ぶ距離が実質的に同一となる位置にあり、
前記回転軸心周りの基端入口の軌跡円内に前記上流側圧送管路の先端出口が臨むように位置決めされ、前記上流側圧送管路の先端出口と前記複数の下流側圧送管路の各基端入口とが連通可能に接続され、
前記上流側圧送管路を通る固化材が、前記撹拌ロッドの前記回転軸心周りの回転により順次前記下流側圧送管路に供給されるように構成したことを特徴とする地盤の撹拌混合処理装置。
【請求項７】撹拌翼を有し、外部に開口する複数の吐出口を有し、かつこれらに連通し粉体系固化材を通す複数の下流側圧送管路を有する撹拌ロッドと、この撹拌ロッドを地盤内に貫入した状態で回転軸心周りに回転させる回転駆動手段とを備えるとともに、
前記下流側圧送管路に対して、少なくとも一つの管路が圧気に乗せて圧送される粉体系固化材を、少なくとも一つの管路が圧気を供給する、先端出口が並列する複数の上流側圧送管路が設けられ、
前記回転軸心は、前記複数の下流側圧送管路の各基端入口と結ぶ距離が実質的に同一となる位置にあり、
前記回転軸心周りの基端入口の軌跡円内に前記各上流側圧送管路の各先端出口が臨むように位置決めされ、前記各上流側圧送管路の各先端出口と前記複数の下流側圧送管路の各基端入口とが連通可能に接続され、
前記上流側圧送管路を通る粉体系固化材が、前記撹拌ロッドの前記回転軸心周りの共通的回転により順次前記下流側圧送管路に供給され、かつ下流側圧送管路の基端入口が圧気が供給される上流側圧送管路に連通した時点で圧気が当該下流側圧送管路内の粉体系固化材に対して作用されるように構成したことを特徴とする地盤の撹拌混合処理装置。
【請求項８】撹拌翼を有し、外部に開口する複数の吐出口を有し、かつこれらに連通し粉体系固化材を通す複数の下流側圧送管路を有する撹拌ロッドと、この撹拌ロッドを地盤内に貫入した状態で回転軸心周りに回転させる回転駆動手段とを備えるとともに、
前記下流側圧送管路に対して、圧送される固化材をそれぞれ供給する、先端出口が並列する複数の上流側圧送管路が設けられ、
前記回転軸心は、前記複数の下流側圧送管路の各基端入口と結ぶ距離が実質的に同一となる位置にあり、
前記回転軸心周りの基端入口の軌跡円内に前記各上流側圧送管路の各先端出口が臨むように位置決めされ、前記各上流側圧送管路の各先端出口と前記複数の下流側圧送管路の各基端入口とが連通可能に接続され、
前記各上流側圧送管路を通る各固化材が、前記撹拌ロッドの前記回転軸心周りの共通的回転により順次前記下流側圧送管路に供給されるように構成したことを特徴とする地盤の撹拌混合処理装置。
【請求項９】撹拌翼を有し、外部に開口する複数の吐出口を有し、かつこれらに連通し粉体系固化材を通す複数の下流側圧送管路を有する撹拌ロッドと、この撹拌ロッドを地盤内に貫入した状態で回転軸心周りに回転させる回転駆動手段とを備えるとともに、
前記下流側圧送管路に対して、少なくとも一つの本管路が圧気に乗せて圧送される粉体系固化材を、少なくとも一つの副管路が圧気を供給する、先端出口が並列する複数の上流側圧送管路が設けられ、
前記回転軸心は、前記複数の下流側圧送管路の各基端入口と結ぶ距離が実質的に同一となる位置にあり、
前記回転軸心周りの基端入口の軌跡円内に前記本管路の先端出口が臨むように位置決めされ、前記本管路の先端出口と前記複数の下流側圧送管路の各基端入口とが連通可能に接続され、かつ前記副管路の先端出口は前記回転に関係なく常時前記複数の下流側圧送管路の各基端入口と連通する状態で接続され、
前記本管路を通る粉体系固化材が、前記撹拌ロッドの前記回転軸心周りの共通的回転により順次前記下流側圧送管路に供給され、かつ前記副管路を通して圧気が当該下流側圧送管路内の粉体系固化材に対して作用されるように構成したことを特徴とする地盤の撹拌混合処理装置。
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】
本発明は、固化材圧送ラインの分配装置、ならびに地盤の撹拌混合処理装置に関する。
【０００２】
【従来の技術】
軟弱地盤を改良する工法の一つとして、外部に開口する吐出口を有し、かつこれらに連通し固化材を通す管路を有する撹拌ロッドを地盤内に貫入した状態で、軸心周りに回転させつつ、前記吐出口から粉体系の固化材やスラリー状の固化材を吐出させ、固化材と原位置の地盤土とを撹拌ロッドにより撹拌混合する地盤の撹拌混合処理工法が知られている。
【０００３】
ここで撹拌混合処理効果および処理能率を高めるためには、吐出口を複数設けることが有効である。
【０００４】
【発明が解決しようとする課題】
しかるに、この場合、一つの管路に対して複数の吐出口を連通させると、運転の経時に伴って一方の吐出口が閉塞傾向になり、他方の吐出口からのみ吐出される傾向がある。この傾向は特に石灰などの粉体系固化材の場合において顕著である。
【０００５】
したがって、複数の下流側圧送管を設け、これらの下流側圧送管に対してそれぞれ吐出口を連通して形成し、これら各下流側圧送管に対して固化材を供給する１本の上流側圧送管を設け、この上流側圧送管から圧送される固化材を、各下流側圧送管に対して同時に分配供給することが閉塞防止のために望まれる。
【０００６】
しかし、１系統で圧送されてくる固化材を、複数の下流側圧送管のそれぞれに対して同時に分配供給したとしても、下流側圧送管のうち最も供給抵抗の小さい管路に対して、多量の固化材が勢い良く供給されてしまい、閉塞により他の管路に流れないか、少なくとも各下流側圧送管に均一に供給されないことが問題であった。
【０００７】
そこで、本発明の主たる課題は、固化材圧送ラインにおける分配を円滑かつ均一にし、もって圧送ラインにおける閉塞等を防止するともに、円滑な地盤の撹拌混合処理を図ることにある。
【０００８】
【課題を解決するための手段】
上記課題を解決した本発明のうち、請求項１記載の発明は、上流側圧送管路から圧送される固化材を、基端入口が並列する複数の下流側圧送管路のそれぞれに分配供給する固化材圧送ラインの分配装置であって；
前記複数の下流側圧送管路を、これらの各基端入口と結ぶ距離が実質的に同一となる位置にある回転軸心周りに、共通的に回転するように構成するか、前記上流側圧送管路を前記回転軸心周りに回転するように構成するか、あるいは前記複数の下流側圧送管路が前記回転軸心周りに共通的に回転し、且つ前記上流側圧送管路がこれら複数の下流側圧送管路より低速となる差速をもって同方向に前記回転軸心周りに回転するように構成し、
前記回転軸心周りの基端入口の軌跡円内に前記上流側圧送管路の先端出口が臨むように位置決めし、前記上流側圧送管路の先端出口と前記複数の下流側圧送管路の各基端入口とを連通可能に接続し、
前記下流側圧送管路が前記回転軸心周りに共通的に回転すること、前記上流側圧送管路が前記回転軸心周りに回転すること、あるいは前記複数の下流側圧送管路が前記回転軸心周りに共通的に回転し、且つ前記上流側圧送管路がこれら複数の下流側圧送管路より低速となる差速をもって同方向に前記回転軸心周りに回転することによって、前記上流側圧送管路を通る固化材が順次前記下流側圧送管路に供給されるように構成したことを特徴とする固化材圧送ラインの分配装置である。本請求項１記載の分配装置は、粉体系固化材の分配に適用するのが好ましいが、スラリー系固化材の分配にも適用することができる。
【０００９】
請求項２記載の発明は、先端出口が並列する複数の上流側圧送管路のうち少なくとも一つの管路から圧気に乗せて圧送される粉体系固化材をならびに少なくとも一つの管路から圧気を供給し、基端入口が並列する複数の下流側圧送管路のそれぞれに前記粉体系固化材を分配供給する固化材圧送ラインの分配装置であって；
前記複数の下流側圧送管路を、これらの各基端入口と結ぶ距離が実質的に同一となる位置にある回転軸心周りに、共通的に回転するように構成し、
前記回転軸心周りの基端入口の軌跡円内に前記各上流側圧送管路の各先端出口が臨むように位置決めし、前記各上流側圧送管路の各先端出口と前記複数の下流側圧送管路の各基端入口とを連通可能に接続し、
前記上流側圧送管路を通る粉体系固化材が、前記下流側圧送管路の前記回転軸心周りの共通的回転により順次前記下流側圧送管路に供給され、かつ下流側圧送管路の基端入口が圧気が供給される上流側圧送管路に連通した時点で圧気が当該下流側圧送管路内の粉体系固化材に対して作用されるように構成したことを特徴とする固化材圧送ラインの分配装置である。
【００１０】
請求項３記載の発明は、先端出口が並列する複数の上流側圧送管路のそれぞれから圧送される固化材を、基端入口が並列する複数の下流側圧送管路のそれぞれに分配供給する固化材圧送ラインの分配装置であって；
前記複数の下流側圧送管路を、これらの各基端入口と結ぶ距離が実質的に同一となる位置にある回転軸心周りに、共通的に回転するように構成し、
前記回転軸心周りの基端入口の軌跡円内に前記各上流側圧送管路の各先端出口が臨むように位置決めし、前記各上流側圧送管路の各先端出口と前記複数の下流側圧送管路の各基端入口とを連通可能に接続し、
前記各上流側圧送管路を通る各固化材が、前記下流側圧送管路の前記回転軸心周りの共通的回転により順次前記下流側圧送管路に供給されるように構成したことを特徴とする固化材圧送ラインの分配装置である。
【００１１】
請求項４記載の発明は、前記複数の上流側圧送管路も前記回転軸心周りに共通的に回転するように構成されており、これら複数の上流側圧送管路を前記複数の下部管路群より低速となる差速をもって同方向に前記回転軸心周りに回転させるように構成した請求項２または３記載の固化材圧送ラインの分配装置である。
【００１２】
請求項５記載の発明は、上流側圧送管路のうち少なくとも一つの本管路から圧気に乗せて圧送される粉体系固化材をならびに副管路から圧気を供給し、並列する複数の下流側圧送管路のそれぞれに前記粉体系固化材を分配供給する固化材圧送ラインの分配装置であって；
前記複数の下流側圧送管路を、これらの各基端入口と結ぶ距離が実質的に同一となる位置にある回転軸心周りに、共通的に回転するように構成し、
前記回転軸心周りの基端入口の軌跡円内に前記本管路の先端出口が臨むように位置決めし、前記本管路の先端出口と前記複数の下流側圧送管路の各基端入口とを連通可能に接続し、かつ前記副管路の先端出口は前記回転に関係なく常時前記複数の下流側圧送管路の各基端入口と連通する状態で接続し、
前記本管路を通る粉体系固化材が、前記下流側圧送管路の前記回転軸心周りの共通的回転により順次前記下流側圧送管路に供給され、かつ前記副管路を通して圧気が当該下流側圧送管路内の粉体系固化材に対して作用されるように構成したことを特徴とする固化材圧送ラインの分配装置である。
【００１３】
請求項６記載の発明は、撹拌翼を有し、外部に開口する複数の吐出口を有し、かつこれらに連通し固化材を通す複数の下流側圧送管路を有する撹拌ロッドと、この撹拌ロッドを地盤内に貫入した状態で回転軸心周りに回転させる回転駆動手段とを備えるとともに、
前記下流側圧送管路に対して、固化材を圧送する上流側圧送管路が設けられ、
前記回転軸心は、前記複数の下流側圧送管路の各基端入口と結ぶ距離が実質的に同一となる位置にあり、
前記回転軸心周りの基端入口の軌跡円内に前記上流側圧送管路の先端出口が臨むように位置決めされ、前記上流側圧送管路の先端出口と前記複数の下流側圧送管路の各基端入口とが連通可能に接続され、
前記上流側圧送管路を通る固化材が、前記撹拌ロッドの前記回転軸心周りの回転により順次前記下流側圧送管路に供給されるように構成したことを特徴とする地盤の撹拌混合処理装置である。本請求項５記載の撹拌混合処理装置では、粉体系固化材を使用するのが好ましいが、スラリー系固化材を使用することもできる。
【００１４】
請求項７記載の発明は、撹拌翼を有し、外部に開口する複数の吐出口を有し、かつこれらに連通し粉体系固化材を通す複数の下流側圧送管路を有する撹拌ロッドと、この撹拌ロッドを地盤内に貫入した状態で回転軸心周りに回転させる回転駆動手段とを備えるとともに、
前記下流側圧送管路に対して、少なくとも一つの管路が圧気に乗せて圧送される粉体系固化材を、少なくとも一つの管路が圧気を供給する、先端出口が並列する複数の上流側圧送管路が設けられ、
前記回転軸心は、前記複数の下流側圧送管路の各基端入口と結ぶ距離が実質的に同一となる位置にあり、
前記回転軸心周りの基端入口の軌跡円内に前記各上流側圧送管路の各先端出口が臨むように位置決めされ、前記各上流側圧送管路の各先端出口と前記複数の下流側圧送管路の各基端入口とが連通可能に接続され、
前記上流側圧送管路を通る粉体系固化材が、前記撹拌ロッドの前記回転軸心周りの共通的回転により順次前記下流側圧送管路に供給され、かつ下流側圧送管路の基端入口が圧気が供給される上流側圧送管路に連通した時点で圧気が当該下流側圧送管路内の粉体系固化材に対して作用されるように構成したことを特徴とする地盤の撹拌混合処理装置である。
【００１５】
請求項８記載の発明は、撹拌翼を有し、外部に開口する複数の吐出口を有し、かつこれらに連通し粉体系固化材を通す複数の下流側圧送管路を有する撹拌ロッドと、この撹拌ロッドを地盤内に貫入した状態で回転軸心周りに回転させる回転駆動手段とを備えるとともに、
前記下流側圧送管路に対して、圧送される固化材をそれぞれ供給する、先端出口が並列する複数の上流側圧送管路が設けられ、
前記回転軸心は、前記複数の下流側圧送管路の各基端入口と結ぶ距離が実質的に同一となる位置にあり、
前記回転軸心周りの基端入口の軌跡円内に前記各上流側圧送管路の各先端出口が臨むように位置決めされ、前記各上流側圧送管路の各先端出口と前記複数の下流側圧送管路の各基端入口とが連通可能に接続され、
前記各上流側圧送管路を通る各固化材が、前記撹拌ロッドの前記回転軸心周りの共通的回転により順次前記下流側圧送管路に供給されるように構成したことを特徴とする地盤の撹拌混合処理装置である。
【００１６】
請求項９記載の発明は、撹拌翼を有し、外部に開口する複数の吐出口を有し、かつこれらに連通し粉体系固化材を通す複数の下流側圧送管路を有する撹拌ロッドと、この撹拌ロッドを地盤内に貫入した状態で回転軸心周りに回転させる回転駆動手段とを備えるとともに、
前記下流側圧送管路に対して、少なくとも一つの本管路が圧気に乗せて圧送される粉体系固化材を、少なくとも一つの副管路が圧気を供給する、先端出口が並列する複数の上流側圧送管路が設けられ、
前記回転軸心は、前記複数の下流側圧送管路の各基端入口と結ぶ距離が実質的に同一となる位置にあり、
前記回転軸心周りの基端入口の軌跡円内に前記本管路の先端出口が臨むように位置決めされ、前記本管路の先端出口と前記複数の下流側圧送管路の各基端入口とが連通可能に接続され、かつ前記副管路の先端出口は前記回転に関係なく常時前記複数の下流側圧送管路の各基端入口と連通する状態で接続され、
前記本管路を通る粉体系固化材が、前記撹拌ロッドの前記回転軸心周りの共通的回転により順次前記下流側圧送管路に供給され、かつ前記副管路を通して圧気が当該下流側圧送管路内の粉体系固化材に対して作用されるように構成したことを特徴とする地盤の撹拌混合処理装置である。
【００１７】
【発明の実施の形態】
以下、本発明の実施の形態について添付図面を参照しつつ詳述する。
＜第１の形態；請求項１および請求項６記載の発明に関する＞
図１〜図３は、本発明に係る撹拌混合処理装置１（本発明に係る分配装置１０を採用する）を示しており、このものは、自走型ベースマシン１Ａのブーム１０Ｂ先端部にリーダー１Ｌを取り付け、上側攪拌翼ＷＵおよび下側攪拌翼ＷＬの各背面に各１つの外部に開口する固化材吐出口（図示せず）を有する撹拌ロッド１Ｒと、この撹拌ロッド１Ｒを周方向に回転させる回転駆動手段１Ｍとを、長手方向に前後進自在なようにリーダー１Ｌに対して取り付けてなり、撹拌ロッド１Ｒを地盤内へ貫入した状態で回転軸心ＡＸ周りに回転させるとともに、各吐出口を介して固化材を地盤内にそれぞれ圧送吐出させて、これら吐出固化材と原位置の地盤土とを回転する撹拌ロッド１Ｒにより撹拌混合するものである。
【００１８】
撹拌ロッド１Ｒは、図３に示すように上側攪拌翼ＷＵ背面の固化材吐出口および下側攪拌翼ＷＬ背面の固化材吐出口（図示せず）にそれぞれ連通する２本の下流側圧送管路１１Ａ，１１Ｂを、その各基端入口が並列となるように備えており、特に攪拌ロッド１Ｒの回転軸心ＡＸは、２本の下流側圧送管路１１Ａ，１１Ｂの各基端入口と結ぶ距離が実質的に同一となる位置にあるように構成されている。
【００１９】
また本発明に従って、これら下流側圧送管路１１Ａ，１１Ｂに対して、粉体系固化材を圧気に乗せて圧送する上流側圧送管路１２が設けられるとともに、下流側圧送管路１１Ａ，１１Ｂの各基端入口を通る、攪拌ロッド１Ｒの回転軸心ＡＸ周りの軌跡円内に、上流側圧送管路１２の先端出口が臨むように位置決めされ、上流側圧送管路１２の先端出口と下流側圧送管路１１Ａ，１１Ｂの各基端入口とが連通可能にスイベル接続されており、さらに、上流側圧送管路１２を通る粉体系固化材が、撹拌ロッド１Ｒの回転軸心ＡＸ周りの回転により、順次各下流側圧送管路１１Ａ，１１Ｂに供給されるように構成されている。
【００２０】
他方、各下流側圧送管路１１Ａ，１１Ｂの各基端入口部は、図４に示すように、上流側圧送管路１２（図４には示していない）の先端出口に近づくにつれて、攪拌ロッド１Ｒの回転軸心ＡＸを中心とする円周方向に半円分広がる、入口が略Ｕ字形かつ出口が真円形の漏斗状をなしている。１１ａ，１１ｂは漏斗状入口部分を示している。また、攪拌ロッド１Ｒの回転軸心ＡＸを通る所定面に関して対称をなしている。これは、上流側圧送管路１２を２本の下流側圧送管路１１Ａ，１１Ｂの各々に同時間だけ連通させる場合の入口形状例であり、他の場合については後述する。
【００２１】
かかる装置において、例えば撹拌ロッド１Ｒを地盤内に貫入しつつまたは引き上げつつ回転させる通常の地盤の撹拌混合動作によって（少なくとも撹拌ロッドを回転させることによって）、２本の下流側圧送管路１１Ａ，１１Ｂが一体的に回転する。そしてこの回転によって、上流側圧送管路１２と連通する下流側圧送管路１１Ａ，１１Ｂが切り替わりつつ、上流側圧送管路１２からの固化材が各下流側圧送管路１１Ａ，１１Ｂに対して順に供給される。各下流側圧送管路１１Ａ，１１Ｂに分配供給された固化材は、対応する各吐出口を介して地盤内にそれぞれ圧送吐出され、これら吐出固化材と原位置の地盤土とが回転する攪拌ロッド１Ｒの攪拌翼ＷＵ，ＷＬにより撹拌混合される。
【００２２】
特にかかる切替えにおいて、上流側圧送管路１２は、２本の下流側圧送管路１１Ａ，１１Ｂの両方に連通する状態もあるが、これは一瞬であり、殆どの状態において下流側圧送管路１１Ａ，１１Ｂの一方に一対一で連通する。このように本形態は、実質的には、上流側圧送管路１２と各下流側圧送管路１１Ａ，１１Ｂとの一対一連通の切り替えにより固化材の分配供給を行うと、同時分配供給を行う従来例のように、供給抵抗の少ない下流側圧送管路に多量の固化材が勢い良く流れることが少ない。よって、下流側圧送管路以降の圧送ラインにおける閉塞も生じ難い。また、前記の切替を高速で行えば、前記の各下流側圧送管路に対する一対一での分配供給の切替えでありながらも、同時供給と同程度で分配を行うことができる。
【００２３】
なお、上記説明では粉体系固化材を用いているが、前述のとおりスラリー系の固化材を用いることもできる。
【００２４】
＜第２の形態；請求項２および７記載の発明に関する＞
上述の第１の形態では、上流側圧送管路１２が一方の下流側圧送管路（例えば１１Ａ）にのみ連通し、当該下流側圧送管路（１１Ａ）にのみ固化材が供給されており、かつ他方の下流側圧送管路（１１Ｂ）には何も供給されない瞬間が存在する。よって、下流側圧送管路内に供給された粉体系固化材には、断続的に圧送力が作用することになる。そのため、特に粉体系固化材を圧気に乗せて圧送する場合に、閉塞を起こすことが想定される。もっとも、従来方法と比べれば前述の第１の形態でも閉塞の可能性は格段に減る。
【００２５】
かかる点を考慮する場合、請求項２記載の分配装置を採用する請求項６記載の発明に従って次のようにすることを推奨する。すなわち、図５に示す本第２の形態では、前述第１の形態の上流側圧送管路１２に代えて、圧気に乗せて圧送される粉体系固化材を供給する第１の上流側圧送管路２２Ａと、圧気のみを供給する第２の上流側圧送管路２２Ｂとを各先端出口が並列するように設け、基端出口が並列する２本の下流側圧送管路（それぞれ対応する固化材吐出口に連通する）１１Ａ，１１Ｂのそれぞれに粉体系固化材あるいは圧気のみを分配供給するように構成している。１０Ａは、分配装置部分を示している。
【００２６】
そして、特に本発明に従って、攪拌ロッド１Ｒの回転軸心ＡＸは、各下流側圧送管路１１Ａ，１１Ｂの各基端入口と結ぶ距離が実質的に同一となる位置にあり、回転軸心ＡＸ周りの基端入口の軌跡円内に各上流側圧送管路２２Ａ，２２Ｂの各先端出口が臨むように位置決めされ、各上流側圧送管路２２Ａ，２２Ｂの各先端出口と各下流側圧送管路１１Ａ，１１Ｂの各基端入口とが連通可能にスイベル接続されており、第１の上流側圧送管路１１Ａを通る粉体系固化材が、撹拌ロッド１Ｒの回転軸心ＡＸ周りの共通的回転により順次下流側圧送管路１１Ａ，１１Ｂに供給され、かつ下流側圧送管路１１Ａ，１１Ｂの基端入口が圧気が供給される第２の上流側圧送管路１１Ｂに連通した時点で圧気が当該下流側圧送管路１１Ａ，１１Ｂ内の粉体系固化材に対して作用されるように構成されている。
【００２７】
本第２の形態においても、少なくとも撹拌ロッド１Ｒを回転させることによって、また例えば撹拌ロッド１Ｒを地盤内に貫入しつつまたは引き上げつつ回転させる通常の地盤の撹拌混合動作によって、２本の下流側圧送管路１１Ａ，１１Ｂが一体的に回転する。そしてこの回転によって、各下流側圧送管路１１Ａ，１１Ｂと連通する上流側圧送管路２２Ａ，２２Ｂが、第１の上流側圧送管路２２Ａのみ、第１および第２の上流側圧送管路２２Ａ，２２Ｂ、第２の上流側圧送管路２２Ｂのみ、という一連のサイクルで順次切り替わる。かかる切替えにより、第１の上流側圧送管路２２Ａからの固化材が各下流側圧送管路１１Ａに対して順に供給されるとともに、下流側圧送管路１１Ａ，１１Ｂの基端入口が第２の上流側圧送管路２２Ｂに連通した時点で圧気が当該下流側圧送管路１１Ａ，１１Ｂ内の粉体系固化材に対して作用する。
【００２８】
なお、かかる切替えにおいて、各上流側圧送管路２２Ａ，２２Ｂは、２本の下流側圧送管路１１Ａ，１１Ｂの両方に連通する状態もあるが、これは一瞬であり、殆どの状態において下流側圧送管路１１Ａ，１１Ｂの一方に一対一で連通するのは、前述第１の形態と同様である。
【００２９】
特に本第２の形態では、下流側圧送管路１１Ａ，１１Ｂの基端入口が第２の上流側圧送管路２２Ｂに連通した時点で圧気が当該下流側圧送管路１１Ａ，１１Ｂ内の粉体系固化材に対して作用するので、例えば第１の上流側圧送管路２２Ａが一方の下流側圧送管路１１Ａにのみ連通し、当該下流側圧送管路１１Ａにのみ固化材が供給されているときには、他方の下流側圧送管路１１Ｂには第２の上流側圧送管路２２Ｂが連通し、当該第２の上流側圧送管路２２Ｂからの圧気が当該下流側圧送管路１１Ｂ内の粉体系固化材に対して作用することになる。
【００３０】
したがって、下流側圧送管路１１Ａ，１１Ｂ内に供給された粉体系固化材に、断続的に圧送力が作用することはない。また、前述の第１の形態と同様に各上流側圧送管路２２Ａ，２２Ｂと各下流側圧送管路１１Ａ，１１Ｂとの実質的な一対一連通の切り替えにより固化材の分配供給を行うものであるので、同時分配供給を行う従来例のように、供給抵抗の少ない下流側圧送管路に多量の固化材が勢い良く流れることも少ない。総じて、本第２の形態は、前述第１の形態との比較において、より閉塞が生じにくいものと言える。
【００３１】
他方、上記説明では、第１の上流側圧送管路２２Ａを通して圧気に乗せて粉体系固化材を供給し、第２の上流側圧送管路２２Ｂを通して圧気のみを供給するように構成したが、本発明では、第１の上流側圧送管路２２Ａおよび第２の上流側圧送管路２２Ｂのそれぞれを介して、圧気に乗せて粉体系固化材を供給したり、それぞれを介してスラリー系固化材を圧送供給したりすることもできる（請求項３および８記載の発明に関する）。
【００３２】
＜第３の形態；請求項４記載の発明に関する＞
図６に示す本第３の形態では、圧気に乗せて圧送される粉体系固化材を供給する第１の上流側圧送管路３２Ａと、圧気のみを供給する第２の上流側圧送管路３２Ｂとを各先端出口が並列するように設け、並列する２本の下流側圧送管路１１Ａ，１１Ｂ（それぞれ対応する固化材吐出口に連通する）のそれぞれに粉体系固化材あるいは圧気のみを分配供給するように構成している。なお、図示しないが、２本の下流側圧送管路１１Ａ，１１Ｂは、攪拌ロッド１Ｒ内を通って各固化材吐出口にそれぞれ連通している。１０Ｂは、分配装置部分を示している。
【００３３】
また、攪拌ロッド１Ｒの回転軸心ＡＸは、下流側圧送管路１１Ａ，１１Ｂの各基端入口と結ぶ距離が実質的に同一となる位置にあり、回転軸心ＡＸ周りの基端入口の軌跡円内に各上流側圧送管路３２Ａ，３２Ｂの各先端出口が臨むように位置決めされ、各上流側圧送管路３２Ａ，３２Ｂの各先端出口と各下流側圧送管路１１Ａ，１１Ｂの各基端入口とが連通可能にスイベル接続されている。さらに、攪拌ロッド１Ｒを回転駆動する回転駆動手段１Ｍが設けられており、攪拌ロッド１Ｒの回転により、２本の下流側圧送管路１１Ａ，１１Ｂが、攪拌ロッド１Ｒの回転軸心ＡＸ周りに共通的に回転するようになっている。ここまでは、第２の形態と実質的には異ならない。
【００３４】
特徴的には、攪拌ロッド１Ｒに伴って回転する２本の下流側圧送管路１１Ａ，１１Ｂに対して、第１および第２の上流側圧送管路３２Ａ，３２Ｂも、一体的に且つ独立して攪拌ロッド１Ｒの回転軸心ＡＸ周りに回転するようになっており、さらに上流側圧送管路３２Ａ，３２Ｂと下流側圧送管路１１Ａ，１１Ｂを含む攪拌ロッド１Ｒとを位相ギヤを介して繋ぎ、第１および第２の上流側圧送管路３２Ａ，３２Ｂが、２本の下流側圧送管路１１Ａ，１１Ｂより低速となる差速をもって同方向に前記の回転軸心ＡＸ周りに共通的に回転するようになっている。
【００３５】
他方、第１および第２の上流側圧送管路３２Ａ，３２Ｂは、先端側部分３２Ｔは並列しているが、基端側部分３２Ｐは２重管構造とされており、基端側部分３２Ｐにおける外管３３内面と内管３４外面との隙間Ｓ１が第２の上流側圧送管路３２Ｂとされ且つ内管３４内が第１の上流側圧送管路３２Ａとされている。この基端側部分３２Ｐに対して２重管構造の上流側２重管３５がスイベル接続されており、この上流側２重管３５の外管３５Ａと内管３５Ｂとの隙間Ｓ２が、対応する第２の上流側圧送管路３２Ｂ（すなわち隙間Ｓ１）に常時連通し、上流側２重管３５の内管３５Ｂ内が、対応する第１の上流側圧送管路３２Ａ（すなわち内管３４内）に常時連通するようになっている。これにより、第１および第２の上流側圧送管路３２Ａ，３２Ｂの回転に関係なく、常時、第１の上流側圧送管路３２Ａには圧気に乗った固化材が供給され、かつ第２の上流側圧送管路３２Ｂには、圧気のみが供給される。
【００３６】
かかる第３の形態によると、例えば前述の第２の形態と比べて、第１および第２の上流側圧送管路３２Ａ，３２Ｂと、下流側圧送管路１１Ａ，１１Ｂとを差速をもって同方向に回転させることができ、両者の相対回転速度差を小さくすることができる。例えば、撹拌ロッド１Ｒの回転速度が速い場合に、各下流側圧送管路１１Ａ，１１Ｂが、第１の上流側圧送管路３２Ａと一対一で連通する状態と、第２の上流側圧送管路３２Ｂと一対一で連通する状態との切り替わり速度を遅くして、固化材の分配供給をより確実なものとすることができる。
【００３７】
＜第４の形態；請求項５および請求項９記載の発明に関する＞
第２の形態では、圧気に乗せて粉体系固化材を圧送供給する第１の上流側圧送管路２２Ａと、圧気のみを供給する第２の上流側圧送管路２２Ｂとは、ともに攪拌ロッド１Ｒの回転により、連通する下流側圧送管路１１Ａ，１１Ｂが変化するものである（第３の形態も同様である）が、次のように構成することもできる。
【００３８】
すなわち、図７に示す第４の形態では、２本の上流側圧送管路４２Ａ，４２Ｂは２重管構造となり、内管４３Ａを本管路４２Ａとし、内管４３Ａ外面と外管４３Ｂ内面との隙間Ｓ３を副管路４２Ｂとして、本管路からは圧気に乗せて粉体系固化材を圧送供給し、副管路からは圧気のみを供給するように構成し、基端入口が並列する２本の下流側圧送管路１１Ａ，１１Ｂのそれぞれに粉体系固化材を分配供給するように構成している。なお、図示しないが、２本の下流側圧送管路１１Ａ，１１Ｂは、攪拌ロッド１Ｒ内を通って前述の各固化材吐出口にそれぞれ連通している。１０Ｃは、分配装置部分を示している。
【００３９】
特徴的には、２本の下流側圧送管路１１Ａ，１１Ｂを、これらの各基端入口と結ぶ距離が実質的に同一となる位置にある回転軸心ＡＸ周りに、共通的に回転するように構成するとともに、下流側圧送管路１１Ａ，１１Ｂの各基端入口を通る、その回転軸心ＡＸ周りの軌跡円内に本管路４２Ａの先端出口が臨むように位置決めし、本管路４２Ａの先端出口と２本の下流側圧送管路１１Ａ，１１Ｂの各基端入口とを連通可能にスイベル接続するだけでなく、副管路４２Ｂ（すなわち隙間Ｓ３）の先端出口を、攪拌ロッド１Ｒの回転に伴う下流側圧送管路１１Ａ，１１Ｂの共通的回転に関係なく、常時２本の下流側圧送管路１１Ａ，１１Ｂの各基端入口と連通する状態でスイベル接続している。
【００４０】
この場合、本管路４２Ａを通る粉体系固化材が、下流側圧送管路１１Ａ，１１Ｂの回転軸心ＡＸ周りの共通的回転により、順次、各下流側圧送管路１１Ａ，１１Ｂに粉体系固化材が供給されるだけでなく、副管路４２Ｂを通して圧気が当該本管路４２Ａに連通する下流側圧送管路を含む全ての下流側圧送管路１１Ａ，１１Ｂ内の粉体系固化材に対して作用される。
【００４１】
＜下流側圧送管の基端入口形状の他の例＞
他方、下流側圧送管路の入口部形状の具体例を図８および図９に示した。なお、図示の符号は、上記形態と異なるが、上記の全ての形態に適用できるものである。
【００４２】
まず、図８に示す例は、上流側圧送管路（図示せず）を２本の下流側圧送管路５２，５３の各々に異なる時間連通させる場合の下流側圧送管路の入口形状例を示している。各下流側圧送管路５２，５３は、それぞれ、漏斗状入口部分５２Ａ，５３Ａとこの出口に連続する円形管部分５２Ｂ，５３Ｂとからなり、各下流側圧送管路５２，５３の漏斗状部分５２Ａ，５３Ａの入口開口面積が異なるものである。さらに具体的には、本例の漏斗状入口部分５２Ａ，５３Ａは、一方の漏斗状入口部分５２Ａが円形管部５２Ｂから入口端面に近くなるにつれて、上流側圧送管路または下流側圧送管路の回転軸を中心とする円周方向に２／３円分広がる形をなしており、他方の漏斗状入口部分５３Ａが円形管部５３Ｂから入口端面に近くなるにつれて、上流側圧送管路または下流側圧送管路の回転軸を中心とする円周方向に１／３円分だけ広がる形状をなしているものである。よって、各漏斗状入口部分５２Ａ，５３Ａの入口はそれぞれ異なるが略Ｕ字形をなし、その出口は真円形をなしている。
【００４３】
また、図９に示す例は、図８に示す例よりも連通時間の差を大きくしたものであり、各下流側圧送管路５４，５５は、それぞれ、漏斗状入口部分５４Ａ，５５Ａとこの出口に連続する円形管部分５４Ｂ，５５Ｂとからなり、各下流側圧送管路５４，５５の漏斗状部分５４Ａ，５５Ａの入口開口面積が大幅に異なるものである。具体的には、一方の漏斗状入口部分５４Ａは、円形管部５４Ｂから入口端面に近くなるにつれて、上流側圧送管路または下流側圧送管路の回転軸を中心とする円周方向に３／４円分広がる形状をなしており、他方の漏斗状入口部分５５Ａが円形管部５５Ｂから入口端面に近くなるにつれて、上流側圧送管路または下流側圧送管路の回転軸を中心とする円周方向に１／４円分だけ広がる形状をなしているものである。各漏斗状入口部分５４Ａ，５５Ａの入口はそれぞれ異なるが略Ｕ字形をなし、その出口は真円形をなしているのは、図８の例と同様である。本例における広がり形状は、図９に示す例におけるII−II断面を示した図１０を参照すると容易に理解される。
【００４４】
これらの例を適用すれば、固化材の吐出口を長手方向に複数箇所設けた攪拌ロッドを用いて、地盤の攪拌混合を行うに際し、例えば吐出口が２箇所の場合に、前述の図８および図９に示すように、上側の吐出口に連通する下流側圧送管路の入口面積を相対的に狭くし、下側の吐出口に連通する下流側圧送管路の入口面積を相対的に広くすることにより、吐出抵抗の相対的に大きい下側の吐出口からの固化材吐出時間を上側の吐出口からのそれよりも長くすることができる。
【００４５】
＜他の形態＞
他方、上記の本発明に係る攪拌混合処理装置は、本発明の分配装置の構造を採用するものであり、したがって、分配装置部分のみを単独の装置とすることができる。
【００４６】
この第１の例（請求項１記載の発明に関する）を図１１に示す。本分配装置例６０では、上流側圧送管路６２から圧送される固化材（粉体系であっても、スラリー系であっても良い）を、基端入口が並列する２本の下流側圧送管路６１Ａ，６１Ｂのそれぞれに分配供給するべく、上流側圧送管路６２を２本の下流側圧送管路６１Ａ，６１Ｂの各基端入口と結ぶ距離が実質的に同一となる位置にある回転軸心ＡＸ周りに回転するように構成し、その回転軸心ＡＸ周りの基端入口の軌跡円内に上流側圧送管路６２の先端出口が臨むように位置決めし、上流側圧送管路６２の先端出口と下流側圧送管路６１Ａ，６１Ｂの各基端入口とを連通可能にスイベル接続し、上流側圧送管路６２が前記の回転軸心ＡＸ周りに回転することによって、上流側圧送管路６２を通る固化材が、順次下流側圧送管路６１Ａ，６１Ｂに分配供給されるように構成している。６０Ｍは、上流側圧送管路６２を回転させるための回転駆動手段を示している。
【００４７】
特に本例では、２本の下流側圧送管路６１Ａ，６１Ｂは回転させず、上流側圧送管路６２を回転させるようにしているため、回転しない非回転上流側管路６３（回転軸心ＡＸ周りに回転しない）を上流側圧送管路６２の基端入口に対して常時連通可能にスイベル接続しており、この上流側非回転管路６３からの固化材が上流側圧送管路６２に供給され、上流側圧送管路６２を通る固化材が各下流側圧送管路６１Ａ，６１Ｂに、順次分配供給されるようになっている。
【００４８】
なお、本分配装置でも、前記の攪拌混合処理装置例にならって、複数の下流側圧送管路を共通的に回転するように構成したり、複数の下流側圧送管路が共通的に回転し、且つ上流側圧送管路がこれら複数の下流側圧送管路より低速となる差速をもって同方向に回転するように構成したりすることができる。
【００４９】
本分配装置を用いることにより、シングルライン出力タイプの固化材圧送ポンプを一台用いるだけで、これからの固化材を、複数の固化材圧送ライン（例えば複数軸型の深層混合処理機の各攪拌軸内の圧送ライン）のそれぞれに対して分配供給することができようになり、またその際の各固化材圧送ラインにおける閉塞も生じ難くなる。
【００５０】
第２の例（請求項２記載の発明に関する）を図１２に示す。本第２の例は、粉体系固化材の圧気による圧送に適するものであり、先端出口が並列する２本の上流側圧送管路７２Ａ，７２Ｂのうち第１の上流側圧送管路７２Ａから圧気に乗せて圧送される粉体系固化材を供給し、ならびに第２の管路７２Ｂから圧気を供給し、基端入口が並列する２本の下流側圧送管路７１Ａ，７１Ｂのそれぞれに粉体系固化材を分配供給する固化材圧送ラインの分配装置７０である。
【００５１】
特に、２本の下流側圧送管路７１Ａ，７１Ｂを、これらの各基端入口と結ぶ距離が実質的に同一となる位置にある回転軸心ＡＸ周りに、共通的に回転するように構成し、下流側圧送管路７１Ａ，７１Ｂの各基端入口を通る回転軸心ＡＸ周りの軌跡円内に各上流側圧送管路７２Ａ，７２Ｂの各先端出口が臨むように位置決めし、各上流側圧送管路７２Ａ，７２Ｂの各先端出口と複数の下流側圧送管路の各基端入口とを連通可能にスイベル接続している。７０Ｍは、下流側圧送管路７１Ａ，７１を回転させるための回転駆動手段を示している。
【００５２】
さらに本例では、２本の下流側圧送管路７１Ａ，７１Ｂを前述のとおり共通的に回転させるようにしているため、これらを介して圧送される固化材を２本の非回転下流側管路（回転軸心ＡＸ周りに共通的に回転しない）を介して送出するようにしている。すなわち、下流側圧送管路７１Ａ，７１Ｂの各先端出口を通る前記の回転軸心ＡＸ周りの軌跡円内に、非回転下流側管路７３Ａ，７３Ｂの各基端入口が臨むように位置決めするとともに、下流側圧送管路７１Ａ，７１Ｂの各先端出口と非回転下流側管路７３Ａ，７３Ｂの各基端入口とを連通可能にスイベル接続している。
【００５３】
したがって、下流側圧送管路７１Ａ，７１Ｂを前記回転軸心ＡＸ周りの共通的回転させるとともに、第１の上流側圧送管路７２Ａを介して粉体系固化材を圧気に乗せて供給し、第２の上流側圧送管路７２Ｂを介して圧気のみを供給すれば、第１の上流側圧送管路７２Ａを通る粉体系固化材が、下流側圧送管路７１Ａ，７１Ｂの前記回転軸心ＡＸ周りの共通的回転により、順次各下流側圧送管路７１Ａ，７１Ｂに供給され、かつ下流側圧送管路７１Ａ，７１Ｂの基端入口が圧気が供給される第２の上流側圧送管路７２Ｂに連通した時点で圧気が当該下流側圧送管路７１Ａ，７１Ｂ内の粉体系固化材に対して作用されるようになる。また、各下流側圧送管路７１Ａ，７１Ｂ内に分配供給された粉体系固化材は、各非回転下流側管路７３Ａ，７３Ｂを介して送出される。
【００５４】
この場合、前述の攪拌混合処理装置の第２の形態と同様の作用効果が奏せられ、より閉塞を起こしにくくなる。
【００５５】
また、第２の形態と同様に、本発明では、第１の上流側圧送管路７２Ａおよび第２の上流側圧送管路７２Ｂのそれぞれを介して、圧気に乗せて粉体系固化材を供給したり、それぞれを介してスラリー系固化材を圧送供給したりすることもできる（請求項３記載の発明に関する）。
【００５６】
＜その他＞
上記例では、上流側圧送管路は１本または２本とされ、下流側圧送管路は２本とされているが、本発明ではそれぞれ３本以上とすることもできる。
【００５７】
【発明の効果】
以上のとおり、本発明によれば、固化材圧送ラインにおける分配を円滑かつ均一にし、もって圧送ラインにおける閉塞等を防止するともに、円滑な地盤の撹拌混合処理を図ることができるようになる。
【図面の簡単な説明】
【図１】
本発明の第１の実施形態を示す概略側面図である。
【図２】
その正面図である。
【図３】
その要部拡大断面図である。
【図４】
図３のＩ−Ｉ断面の要部を示す図である。
【図５】
第２の実施形態の要部を示す要部拡大断面図である。
【図６】
第３の実施形態の要部を示す要部拡大断面図である。
【図７】
第４の実施形態の要部を示す要部拡大断面図である。
【図８】
下流側圧送管路の入口部形状例を示す断面図である。
【図９】
下流側圧送管路の入口部形状例を示す断面図である。
【図１０】
図９のII−II断面を示す図である。
【図１１】
他の例を示す断面図である。
【図１２】
他の例を示す断面図である。
【符号の説明】
１…地盤の攪拌混合処理装置、１１Ａ，１１Ｂ…下流側圧送管路、１２…上流側圧送管路。
[Document name] Specification [Title of invention] Distributing device for solidifying material pumping line, and stirring and mixing processing device for ground [Claims]
1. A distribution device for a solidifying material pumping line that distributes and supplies a solidifying material pumped from an upstream pumping pipe to each of a plurality of downstream pumping pipes in which base end inlets are parallel to each other;
The plurality of downstream pumping pipelines are configured to rotate in common around a rotation axis at a position where the distances connecting the plurality of downstream pumping pipelines are substantially the same, or the upstream pumping is performed. The pipeline is configured to rotate around the rotation axis, or the plurality of downstream pumping pipelines rotate in common around the rotation axis, and the upstream pumping conduits are a plurality of these. It is configured to rotate around the rotation axis in the same direction with a differential speed that is lower than the downstream pressure feed line.
Positioned so that the tip outlet of the upstream pumping line faces within the locus circle of the base end inlet around the center of rotation of the rotation axis, and the tip outlet of the upstream pumping line and each of the plurality of downstream pressure feeding lines. Connect to the base entrance so that it can communicate
The downstream pressure feeding line rotates in common around the rotation axis, the upstream pressure feeding line rotates around the rotation axis, or the plurality of downstream pressure feeding lines rotate around the rotation axis. The upstream side pumping line rotates in common around the center and rotates around the rotation axis in the same direction with a difference speed at which the upstream side pressure feeding line is slower than the plurality of downstream side pressure feeding lines. A distribution device for a solidifying material pumping line, characterized in that the solidifying material passing through the pipeline is sequentially supplied to the downstream pressure feeding pipeline.
2. A powder-based solidifying material that is pressure-fed from at least one of a plurality of upstream pressure-feeding pipes having parallel tip outlets and pressure-fed from at least one pipe to supply pressure. It is a distribution device for a solidifying material pumping line that distributes and supplies the powder-based solidifying material to each of a plurality of downstream pressure feeding pipes in which the end inlets are parallel;
The plurality of downstream pumping pipes are configured to rotate in common around a rotation axis at a position where the distances connecting the respective proximal inlets are substantially the same.
Positioning is performed so that each tip outlet of each upstream side pumping line faces within the locus circle of the base end inlet around the center of rotation, and each tip outlet of each upstream side pressure feeding line and the plurality of downstream side pumping lines. Connect each base end entrance of the pipeline so that it can communicate with each other.
The powder-based solidifying material passing through the upstream-side pressure-feeding pipe is sequentially supplied to the downstream-side pressure-feeding pipe by a common rotation around the rotation axis of the downstream-side pressure-feeding pipe, and is a base of the downstream-side pressure-feeding pipe. The solidifying material pumping is configured so that the pressure is acted on the powder-based solidifying material in the downstream pressure feeding pipe when the end inlet communicates with the upstream pressure feeding pipe to which the pressure air is supplied. Line distributor.
3. A solidifying material pumping line that distributes and supplies solidifying material pumped from each of a plurality of upstream pumping pipelines having parallel tip outlets to each of a plurality of downstream pumping pipelines having parallel proximal inlets. Distributor;
The plurality of downstream pumping pipes are configured to rotate in common around a rotation axis at a position where the distances connecting the respective proximal inlets are substantially the same.
Positioning is performed so that each tip outlet of each upstream side pumping line faces within the locus circle of the base end inlet around the center of rotation, and each tip outlet of each upstream side pressure feeding line and the plurality of downstream side pumping lines. Connect each base end entrance of the pipeline so that it can communicate with each other.
Each solidifying material passing through each of the upstream side pressure feeding pipes is configured to be sequentially supplied to the downstream side pressure feeding pipe by a common rotation around the rotation axis of the downstream side pressure feeding pipe. Distributor of solidifying material pumping line.
4. The plurality of upstream pressure feeding pipelines are also configured to rotate in common around the rotation axis, and these plurality of upstream pumping pipelines are slower than the plurality of lower pipelines. The distribution device for a solidifying material pumping line according to claim 2 or 3, which is configured to rotate around the rotation axis in the same direction with a differential speed.
5. A plurality of downstream pressure-feeding pipelines in which a powder-based solidifying material that is pressure-fed from at least one main pipeline of the upstream-side pumping pipeline and pressure-feeding from a sub-pipeline is supplied and parallel to each other. It is a distribution device of a solidifying material pumping line that distributes and supplies the powder-based solidifying material to each of the above;
The plurality of downstream pumping pipes are configured to rotate in common around a rotation axis at a position where the distances connecting the respective proximal inlets are substantially the same.
Positioning the tip outlet of the main pipeline so as to face within the locus circle of the proximal end inlet around the center of rotation, the distal end outlet of the main conduit and each proximal inlet of the plurality of downstream pumping pipelines. And the tip outlet of the sub-pipeline is always connected to each base end inlet of the plurality of downstream pumping pipes regardless of the rotation.
The powder-based solidifying material passing through the main pipeline is sequentially supplied to the downstream pressure feed pipeline by a common rotation around the rotation axis of the downstream pressure feed pipeline, and the pressure air is supplied to the downstream side pressure feed pipeline through the auxiliary pipeline. A distribution device for a solidifying material pumping line, characterized in that it is configured to act on a powder-based solidifying material in a side pumping pipeline.
6. A stirring rod having a stirring blade, having a plurality of discharge ports open to the outside, and having a plurality of downstream pressure feeding pipes communicating with the stirring rod and passing a solidifying material through the stirring rod, and ground the stirring rod. It is equipped with a rotation drive means that rotates around the center of rotation while penetrating inside.
An upstream side pressure feeding line for pumping the solidifying material is provided for the downstream side pressure feeding line.
The rotation axis is located at a position where the distances connected to the respective base end inlets of the plurality of downstream pumping pipelines are substantially the same.
The tip outlet of the upstream pumping line is positioned so as to face the locus circle of the base end inlet around the center of rotation of the rotation axis, and the tip outlet of the upstream pumping line and each of the plurality of downstream pressure feeding lines are located. It is connected to the base entrance so that it can communicate with it.
A ground agitation and mixing treatment apparatus characterized in that the solidifying material passing through the upstream side pressure feeding pipe is configured to be sequentially supplied to the downstream side pressure feeding pipe by rotation of the stirring rod around the rotation axis. ..
7. A stirring rod having a stirring blade, a plurality of discharge ports that open to the outside, and a plurality of downstream pressure feeding pipes that communicate with the stirring blades and pass a powder-based solidifying material through the stirring rods. Is provided with a rotation driving means for rotating around the axis of rotation while penetrating into the ground.
A plurality of upstream side pressure feeds in which the tip outlets are parallel to each other, in which at least one pipe line supplies pressure to the powder-based solidifying material which is pressure-fed by applying pressure to the downstream side pressure feed pipe line. A pipeline is provided,
The rotation axis is located at a position where the distances connected to the respective base end inlets of the plurality of downstream pumping pipelines are substantially the same.
Each tip outlet of each upstream side pressure feeding line is positioned so as to face the locus circle of the base end inlet around the center of rotation, and each tip outlet of each upstream side pressure feeding line and the plurality of downstream side pumping lines. Each base end entrance of the pipeline is connected so that it can communicate with each other.
The powder-based solidifying material passing through the upstream pressure-feeding pipe is sequentially supplied to the downstream pressure-feeding pipe by a common rotation around the rotation axis of the stirring rod, and the base end inlet of the downstream pressure-feeding pipe is A ground agitation and mixing treatment apparatus characterized in that the pressure is applied to the powder-based solidifying material in the downstream pressure-feeding pipe when it communicates with the upstream pressure-feeding pipe to which the pressure is supplied. ..
8. A stirring rod having a stirring blade, a plurality of discharge ports that open to the outside, and a plurality of downstream pressure feeding pipes that communicate with the stirring blades and pass a powder-based solidifying material through the stirring rods. Is provided with a rotation driving means for rotating around the axis of rotation while penetrating into the ground.
A plurality of upstream side pressure feeding pipes having parallel tip outlets are provided to each of the downstream side pressure feeding pipes to supply the solidified material to be pumped.
The rotation axis is located at a position where the distances connected to the respective base end inlets of the plurality of downstream pumping pipelines are substantially the same.
Each tip outlet of each upstream side pressure feeding line is positioned so as to face the locus circle of the base end inlet around the center of rotation, and each tip outlet of each upstream side pressure feeding line and the plurality of downstream side pumping lines. Each base end entrance of the pipeline is connected so that it can communicate with each other.
The ground is characterized in that each solidifying material passing through each of the upstream pressure feeding pipes is sequentially supplied to the downstream pressure feeding pipe by a common rotation of the stirring rod around the rotation axis. Stirring and mixing processing equipment.
9. A stirring rod having a stirring blade, a plurality of discharge ports that open to the outside, and a plurality of downstream pressure feeding pipes that communicate with the stirring blades and pass a powder-based solidifying material through the stirring rods. Is provided with a rotation driving means for rotating around the axis of rotation while penetrating into the ground.
A plurality of upstreams in which the tip outlets are parallel to each other, in which at least one main pipeline supplies the powder-based solidifying material which is pressure-fed to the downstream pressure-feeding pipeline with pressure, and at least one auxiliary pipeline supplies the pressure. A side pumping line is provided,
The rotation axis is located at a position where the distances connected to the respective base end inlets of the plurality of downstream pumping pipelines are substantially the same.
The tip outlet of the main pipeline is positioned so as to face the locus circle of the proximal end inlet around the center of rotation, and the distal end outlet of the main conduit and each proximal inlet of the plurality of downstream pumping pipelines. Are connected so as to be able to communicate with each other, and the tip outlet of the sub-pipeline is always connected to each base end inlet of the plurality of downstream pumping pipes regardless of the rotation.
The powder-based solidifying material passing through the main pipeline is sequentially supplied to the downstream side pressure feed pipe by a common rotation around the rotation axis of the stirring rod, and pressure is supplied to the downstream side pressure feed pipe through the sub-pipeline. A ground agitation and mixing treatment device characterized in that it is configured to act on a powder-based solidifying material in a path.
Description: TECHNICAL FIELD [Detailed description of the invention]
[0001]
[Technical field to which the invention belongs]
The present invention relates to a distribution device for a solidifying material pumping line and a stirring and mixing treatment device for ground.
0002.
[Conventional technology]
As one of the construction methods for improving soft ground, a stirring rod having a discharge port that opens to the outside and a conduit that communicates with these and allows a solidifying material to pass through is penetrated into the ground and rotated around the axis. There is known a ground stirring and mixing treatment method in which a powder-based solidifying material or a slurry-like solidifying material is discharged from the discharge port, and the solidifying material and the ground soil at the in-situ position are stirred and mixed by a stirring rod.
0003
Here, in order to enhance the stirring / mixing treatment effect and the treatment efficiency, it is effective to provide a plurality of discharge ports.
0004
[Problems to be Solved by the Invention]
However, in this case, if a plurality of discharge ports are communicated with each other through one pipeline, one discharge port tends to be closed with the lapse of time of operation, and the discharge tends to be discharged only from the other discharge port. This tendency is particularly remarkable in the case of powder-based solidifying materials such as lime.
0005
Therefore, a plurality of downstream pressure feed pipes are provided, each of these downstream pressure feed pipes is formed by communicating a discharge port, and one upstream side pressure feed pipe that supplies a solidifying material to each of these downstream side pressure feed pipes is provided. It is desired to provide a pipe and simultaneously distribute and supply the solidifying material pumped from the upstream pressure-feeding pipe to each downstream pressure-feeding pipe in order to prevent blockage.
0006
However, even if the solidifying material pumped by one system is simultaneously distributed and supplied to each of the plurality of downstream pumping pipes, a large amount of the solidifying material is supplied to the pipeline having the smallest supply resistance among the downstream pumping pipes. The problem was that the solidifying material was supplied vigorously and did not flow to other pipelines due to blockage, or at least it was not uniformly supplied to each downstream pumping pipe.
0007
Therefore, a main object of the present invention is to make the distribution in the solidifying material pumping line smooth and uniform, prevent blockage in the pumping line, and achieve smooth ground stirring and mixing treatment.
0008
[Means for solving problems]
Among the present inventions that have solved the above problems, the invention according to claim 1 distributes and supplies the solidifying material pumped from the upstream pumping pipeline to each of the plurality of downstream pumping pipelines in which the base end inlets are parallel. It is a distributor of solidifying material pumping line;
The plurality of downstream pumping pipelines are configured to rotate in common around a rotation axis at a position where the distances connecting the plurality of downstream pumping pipelines are substantially the same, or the upstream pumping is performed. The pipeline is configured to rotate around the rotation axis, or the plurality of downstream pumping pipelines rotate in common around the rotation axis, and the upstream pumping conduits are a plurality of these. It is configured to rotate around the rotation axis in the same direction with a differential speed that is lower than the downstream pressure feed line.
Positioned so that the tip outlet of the upstream pumping line faces within the locus circle of the base end inlet around the center of rotation of the rotation axis, and the tip outlet of the upstream pumping line and each of the plurality of downstream pressure feeding lines. Connect to the base entrance so that it can communicate
The downstream pressure feeding line rotates in common around the rotation axis, the upstream pressure feeding line rotates around the rotation axis, or the plurality of downstream pressure feeding lines rotate around the rotation axis. The upstream side pumping line rotates in common around the center and rotates around the rotation axis in the same direction with a difference speed at which the upstream side pressure feeding line is slower than the plurality of downstream side pressure feeding lines. This is a distribution device for a solidifying material pumping line, characterized in that the solidifying material passing through the pipeline is sequentially supplied to the downstream pressure feeding pipeline. The distribution device according to claim 1 is preferably applied to the distribution of the powder-based solidifying material, but can also be applied to the distribution of the slurry-based solidifying material.
0009
The invention according to claim 2 supplies a powder-based solidifying material that is pressure-fed by applying pressure from at least one of a plurality of upstream pressure-feeding pipes having parallel tip outlets, and also supplies pressure from at least one pipe. However, it is a distribution device for a solidifying material pumping line that distributes and supplies the powder-based solidifying material to each of a plurality of downstream pressure feeding pipes in which the base end inlets are parallel;
The plurality of downstream pumping pipes are configured to rotate in common around a rotation axis at a position where the distances connecting the respective proximal inlets are substantially the same.
Positioning is performed so that each tip outlet of each upstream side pumping line faces within the locus circle of the base end inlet around the center of rotation, and each tip outlet of each upstream side pressure feeding line and the plurality of downstream side pumping lines. Connect each base end entrance of the pipeline so that it can communicate with each other.
The powder-based solidifying material passing through the upstream-side pressure-feeding pipe is sequentially supplied to the downstream-side pressure-feeding pipe by a common rotation around the rotation axis of the downstream-side pressure-feeding pipe, and is a base of the downstream-side pressure-feeding pipe. The solidifying material pumping is configured so that the pressure is acted on the powder-based solidifying material in the downstream pressure feeding pipe when the end inlet communicates with the upstream pressure feeding pipe to which the pressure air is supplied. It is a line distribution device.
0010
According to the third aspect of the present invention, the solidifying material pumped from each of the plurality of upstream pumping pipelines in which the tip outlets are parallel is distributed and supplied to each of the plurality of downstream pumping pipelines in which the proximal inlets are parallel. It is a distribution device for material pumping lines;
The plurality of downstream pumping pipes are configured to rotate in common around a rotation axis at a position where the distances connecting the respective proximal inlets are substantially the same.
Positioning is performed so that each tip outlet of each upstream side pumping line faces within the locus circle of the base end inlet around the center of rotation, and each tip outlet of each upstream side pressure feeding line and the plurality of downstream side pumping lines. Connect each base end entrance of the pipeline so that it can communicate with each other.
Each solidifying material passing through each of the upstream side pressure feeding pipes is configured to be sequentially supplied to the downstream side pressure feeding pipe by a common rotation around the rotation axis of the downstream side pressure feeding pipe. It is a distribution device for the solidifying material pumping line.
0011
The invention according to claim 4 is configured such that the plurality of upstream pumping pipelines also rotate in common around the rotation axis, and the plurality of upstream pumping pipelines are connected to the plurality of lower pipelines. The distribution device for a solidifying material pumping line according to claim 2 or 3, which is configured to rotate around the rotation axis in the same direction with a differential speed lower than that of the group.
0012
The invention according to claim 5 comprises a powder-based solidifying material that is pressure-fed from at least one main pipe of the upstream pressure-feeding pipe, and a plurality of downstream sides that supply pressure from a sub-pipeline and are parallel to each other. It is a distribution device for a solidifying material pumping line that distributes and supplies the powder-based solidifying material to each of the pumping pipelines;
The plurality of downstream pumping pipes are configured to rotate in common around a rotation axis at a position where the distances connecting the respective proximal inlets are substantially the same.
Positioning the tip outlet of the main pipeline so as to face within the locus circle of the proximal end inlet around the center of rotation, the distal end outlet of the main conduit and each proximal inlet of the plurality of downstream pumping pipelines. And the tip outlet of the sub-pipeline is always connected to each base end inlet of the plurality of downstream pumping pipes regardless of the rotation.
The powder-based solidifying material passing through the main pipeline is sequentially supplied to the downstream pressure feed pipeline by a common rotation around the rotation axis of the downstream pressure feed pipeline, and the pressure air is supplied to the downstream side pressure feed pipeline through the auxiliary pipeline. It is a distribution device for a solidifying material pumping line, characterized in that it is configured to act on a powder-based solidifying material in a side pumping pipeline.
0013
The invention according to claim 6 comprises a stirring rod having a stirring blade, a plurality of discharge ports opening to the outside, and a plurality of downstream pressure feeding pipes communicating with the stirring rod and passing a solidifying material therethrough, and the stirring thereof. It is equipped with a rotation drive means for rotating the rod around the center of rotation while the rod is penetrated into the ground.
An upstream side pressure feeding line for pumping the solidifying material is provided for the downstream side pressure feeding line.
The rotation axis is located at a position where the distances connected to the respective base end inlets of the plurality of downstream pumping pipelines are substantially the same.
The tip outlet of the upstream pumping line is positioned so as to face the locus circle of the base end inlet around the center of rotation of the rotation axis, and the tip outlet of the upstream pumping line and each of the plurality of downstream pressure feeding lines are located. It is connected to the base entrance so that it can communicate with it.
A ground agitation and mixing treatment apparatus characterized in that the solidifying material passing through the upstream side pressure feeding pipe is configured to be sequentially supplied to the downstream side pressure feeding pipe by rotation of the stirring rod around the rotation axis. Is. In the stirring and mixing treatment apparatus according to claim 5, it is preferable to use a powder-based solidifying material, but a slurry-based solidifying material can also be used.
0014.
The invention according to claim 7 comprises a stirring rod having a stirring blade, a plurality of discharge ports that open to the outside, and a plurality of downstream pressure feeding pipes that communicate with the stirring blades and pass a powder-based solidifying material through the stirring rods. It is provided with a rotation driving means for rotating the stirring rod around the center of rotation while penetrating into the ground.
A plurality of upstream side pressure feeds in which the tip outlets are parallel to each other, in which at least one pipe line supplies pressure to the powder-based solidifying material which is pressure-fed by applying pressure to the downstream side pressure feed pipe line. A pipeline is provided,
The rotation axis is located at a position where the distances connected to the respective base end inlets of the plurality of downstream pumping pipelines are substantially the same.
Each tip outlet of each upstream side pressure feeding line is positioned so as to face the locus circle of the base end inlet around the center of rotation, and each tip outlet of each upstream side pressure feeding line and the plurality of downstream side pumping lines. Each base end entrance of the pipeline is connected so that it can communicate with each other.
The powder-based solidifying material passing through the upstream pressure-feeding pipe is sequentially supplied to the downstream pressure-feeding pipe by a common rotation around the rotation axis of the stirring rod, and the base end inlet of the downstream pressure-feeding pipe is A ground agitation and mixing treatment apparatus characterized in that the pressure is applied to the powder-based solidifying material in the downstream pressure-feeding pipe when it communicates with the upstream pressure-feeding pipe to which the pressure is supplied. Is.
0015.
The invention according to claim 8 comprises a stirring rod having a stirring blade, a plurality of discharge ports that open to the outside, and a plurality of downstream pressure feeding pipes that communicate with the stirring blades and pass a powder-based solidifying material through the stirring rods. It is provided with a rotation driving means for rotating the stirring rod around the center of rotation while penetrating into the ground.
A plurality of upstream side pressure feeding pipes having parallel tip outlets are provided to each of the downstream side pressure feeding pipes to supply the solidified material to be pumped.
The rotation axis is located at a position where the distances connected to the respective base end inlets of the plurality of downstream pumping pipelines are substantially the same.
Each tip outlet of each upstream side pressure feeding line is positioned so as to face the locus circle of the base end inlet around the center of rotation, and each tip outlet of each upstream side pressure feeding line and the plurality of downstream side pumping lines. Each base end entrance of the pipeline is connected so that it can communicate with each other.
The ground is characterized in that each solidifying material passing through each of the upstream pressure feeding pipes is sequentially supplied to the downstream pressure feeding pipe by a common rotation of the stirring rod around the rotation axis. It is a stirring and mixing processing device.
0016.
The invention according to claim 9 comprises a stirring rod having a stirring blade, a plurality of discharge ports that open to the outside, and a plurality of downstream pressure feeding pipes that communicate with the stirring blades and pass a powder-based solidifying material through the stirring rods. It is provided with a rotation driving means for rotating the stirring rod around the center of rotation while penetrating into the ground.
A plurality of upstreams in which the tip outlets are parallel to each other, in which at least one main pipeline supplies the powder-based solidifying material which is pressure-fed to the downstream pressure-feeding pipeline with pressure, and at least one auxiliary pipeline supplies the pressure. A side pumping line is provided,
The rotation axis is located at a position where the distances connected to the respective base end inlets of the plurality of downstream pumping pipelines are substantially the same.
The tip outlet of the main pipeline is positioned so as to face the locus circle of the proximal end inlet around the center of rotation, and the distal end outlet of the main conduit and each proximal inlet of the plurality of downstream pumping pipelines. Are connected so as to be able to communicate with each other, and the tip outlet of the sub-pipeline is always connected to each base end inlet of the plurality of downstream pumping pipes regardless of the rotation.
The powder-based solidifying material passing through the main pipeline is sequentially supplied to the downstream side pressure feed pipe by a common rotation around the rotation axis of the stirring rod, and pressure is supplied to the downstream side pressure feed pipe through the sub-pipeline. It is a ground agitation and mixing treatment device characterized in that it is configured to act on a powder-based solidifying material in the path.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
<First form; relating to the invention according to claim 1 and claim 6>
1 to 3 show the stirring / mixing processing device 1 according to the present invention (the distribution device 10 according to the present invention is adopted), which is a leader at the tip of the boom 10B of the self-propelled base machine 1A. A stirring rod 1R having 1 L attached and each having a solidifying material discharge port (not shown) opened to the outside on the back surface of each of the upper stirring blade WU and the lower stirring blade WL, and the stirring rod 1R are rotated in the circumferential direction. The rotation driving means 1M is attached to the leader 1L so as to be able to move forward and backward in the longitudinal direction, and the stirring rod 1R is rotated around the rotation axis AX with the stirring rod 1R penetrating into the ground, and each discharge port. The solidifying material is pumped and discharged into the ground via the above, and the discharged solidifying material and the ground soil in the original position are stirred and mixed by the rotating stirring rod 1R.
0018
As shown in FIG. 3, the stirring rod 1R has two downstream pressure feed pipes communicating with the solidifying material discharge port on the back surface of the upper stirring blade WU and the solidifying material discharge port (not shown) on the back surface of the lower stirring blade WL. 11A and 11B are provided so that their respective base end inlets are parallel to each other. In particular, the rotation axis AX of the stirring rod 1R is the distance connecting the two downstream side pumping pipes 11A and 11B to each base end inlet. Are configured to be in substantially the same position.
0019
Further, according to the present invention, the upstream side pressure feeding pipe lines 12A and 11B are provided with the upstream side pressure feeding pipe lines 12 for pumping the powder-based solidifying material on the pressure air, and the downstream side pressure feeding pipe lines 11A and 11B are provided. The tip outlet of the upstream side pressure feeding pipe line 12 is positioned so as to face in the locus circle around the rotation axis AX of the stirring rod 1R passing through the base end inlet, and the tip outlet and the downstream side pumping pipe of the upstream side pressure feeding pipe line 12 face. The base end inlets of the pipe lines 11A and 11B are swivel-connected so as to be able to communicate with each other, and the powder-based solidifying material passing through the upstream side pressure feeding pipe line 12 is rotated around the rotation axis AX of the stirring rod 1R. It is configured to be sequentially supplied to the downstream pressure feeding pipes 11A and 11B.
0020
On the other hand, as each downstream side pressure feed pipe 11A, the proximal inlet portion of 11B, as shown in FIG. 4, toward the end outlet of the upstream side pressure feed conduit 12 (not shown in FIG. 4), stirring rod It has a funnel shape with a substantially U-shaped entrance and a perfect circular outlet, which spreads by a semicircle in the circumferential direction centered on the 1R rotation axis AX. Reference numerals 11a and 11b indicate a funnel-shaped entrance portion. Further, the stirring rod 1R is symmetrical with respect to a predetermined surface passing through the rotation axis AX. This is an inlet shape example of a case where the feed upstream side pressure conduit 12 two downstream side pressure feed pipe 11A, communicating by the same time in each of 11B, it will be described later in other cases.
0021.
In such a device, for example, by a normal ground stirring and mixing operation (at least by rotating the stirring rod) in which the stirring rod 1R is rotated while penetrating or pulling up into the ground, the two downstream pumping pipes 11A and 11B Rotates integrally. Then, by this rotation, the downstream side pressure feeding pipes 11A and 11B communicating with the upstream side pressure feeding pipe 12 are switched, and the solidifying material from the upstream side pressure feeding pipe 12 is sequentially referred to the downstream side pressure feeding pipes 11A and 11B. Be supplied. Each downstream side pressure feed pipe 11A, solidified material which is distributed and supplied to 11B are respectively pumped discharge into the soil through each corresponding discharge port, stirring rod and a ground earth of these ejection solidifying material and the original position to rotate Stirring and mixing are performed by the stirring blades WU and WL of 1R.
0022.
In particular such switching it, the conduit 12 feeding the upstream side pressure are two downstream side pressure Okukanro 11A, there is also a state communicating with both 11B, which is the moment, the downstream side pressure Okukanro 11A in most states , 11B one-to-one communication. As described above, in this embodiment, when the solidifying material is distributed and supplied by switching between the upstream side pressure feeding line 12 and the downstream side pressure feeding lines 11A and 11B, the solidifying material is substantially distributed and supplied at the same time. As in the conventional example, a large amount of solidifying material rarely flows vigorously in the downstream pressure feed line with low supply resistance. Therefore, blockage in the pumping line after the downstream pumping line is unlikely to occur. Further, if the above-mentioned switching is performed at high speed, it is possible to perform the distribution at the same level as the simultaneous supply, even though the distribution and supply are switched on a one-to-one basis for each of the downstream-side pumping pipelines.
[0023]
Although the powder-based solidifying material is used in the above description, a slurry-based solidifying material can also be used as described above.
0024
<Second form; relating to the invention according to claims 2 and 7>
In the first aspect described above, the upstream side pressure feeding pipe line 12 communicates with only one downstream side pressure feeding pipe line (for example, 11A), and the solidifying material is supplied only to the downstream side pressure feeding pipe line (11A). And there is a moment when nothing is supplied to the other downstream pumping line (11B). Therefore, the pumping force acts intermittently on the powder-based solidifying material supplied into the downstream pressure-feeding pipeline. Therefore, it is expected that the powder-based solidifying material will be clogged, especially when the powder-based solidifying material is pressure-fed. However, as compared with the conventional method, the possibility of obstruction is significantly reduced even in the above-mentioned first form.
0025
In consideration of this point, it is recommended to do the following in accordance with the invention of claim 6, which employs the distribution device of claim 2. That is, in this second embodiment shown in FIG. 5, instead of the conduit 12 feeding the upstream side pressure of the aforementioned first embodiment, the first upstream side pressure flue supplying powdery scheme solidifying material pumped put the gas A passage 22A and a second upstream pressure feed line 22B for supplying only pressure air are provided so that the tip outlets are parallel to each other, and two downstream pressure feed lines (each corresponding solidifying material) having the base end outlets in parallel are provided. It is configured to distribute and supply only the powder-based solidifying material or pressure to each of 11A and 11B (which communicate with the discharge port). Reference numeral 10A indicates a distributor portion.
0026
Then, particularly in accordance with the present invention, the rotation axis AX of the stirring rod 1R is located at a position where the distances connected to the respective base end inlets of the downstream pressure feeding pipes 11A and 11B are substantially the same, and is around the rotation axis AX. Each tip outlet of each upstream side pressure feeding pipe line 22A, 22B is positioned so as to face in the locus circle of the base end inlet, and each tip outlet of each upstream side pressure feeding pipe line 22A, 22B and each downstream side pressure feeding pipe line 11A. , 11B are swivel-connected to each base end inlet so as to be able to communicate with each other, and the powder-based solidifying material passing through the first upstream side pressure feeding pipe line 11A is sequentially rotated by a common rotation around the rotation axis AX of the stirring rod 1R. The pressure is supplied to the downstream pressure feeding lines 11A and 11B, and the pressure is applied to the downstream side when the base end inlets of the downstream pressure feeding lines 11A and 11B communicate with the second upstream pressure feeding line 11B to which the pressure is supplied. It is configured to act on the powder-based solidifying material in the pumping pipes 11A and 11B.
[0027]
Also in the second embodiment, the two downstream side pumping is performed by rotating at least the stirring rod 1R, or by, for example, a normal ground stirring and mixing operation in which the stirring rod 1R is rotated while penetrating or pulling up into the ground. The pipelines 11A and 11B rotate integrally. Then, due to this rotation, the upstream side pressure feeding pipes 22A and 22B communicating with the downstream side pressure feeding pipes 11A and 11B are only the first upstream side pressure feeding pipe 22A, and the first and second upstream side pressure feeding pipes 22A. , 22B, and only the second upstream pressure feed line 22B, which are sequentially switched in a series of cycles. By such switching, the solidifying material from the first upstream side pressure feeding pipe line 22A is sequentially supplied to each downstream side pressure feeding pipe line 11A, and the base end inlets of the downstream side pressure feeding pipe lines 11A and 11B are second. At the time of communicating with the upstream side pressure feeding pipe line 22B, the pressure air acts on the powder-based solidifying material in the downstream side pressure feeding pipe lines 11A and 11B.
[0028]
Incidentally, in such switching, the upstream side pressure feed pipe 22A, 22B is, two downstream side pressure Okukanro 11A, there is also a state communicating with both 11B, which is the moment, the downstream side in most states One-to-one communication with one of the pumping pipes 11A and 11B is the same as in the first aspect described above.
[0029]
Particularly in the second embodiment, the downstream side pressure Okukanro 11A, proximal inlet of 11B is a second gas at the time of communication with the upstream side pressure flue passage 2 2B is the downstream side pressure Okukanro 11A, powder in 11B Since it acts on the systematic solidifying material, for example, the first upstream side pressure feeding pipe line 22A communicates only with one downstream side pressure feeding pipe line 11A, and the solidifying material is supplied only to the downstream side pressure feeding pipe line 11A. Occasionally, a second upstream pressure feeding line 22B communicates with the other downstream pressure feeding line 11B, and the pressure air from the second upstream pressure feeding line 22B is a powder system in the downstream pressure feeding line 11B. It will act on the solidifying material.
[0030]
Therefore, the pumping force does not act intermittently on the powder-based solidifying material supplied into the downstream pressure feeding pipes 11A and 11B. Further, as in the first embodiment described above, the solidifying material is distributed and supplied by substantially switching between the upstream side pressure feeding pipes 22A and 22B and the respective downstream side pressure feeding pipes 11A and 11B. Therefore, unlike the conventional example in which simultaneous distribution and supply are performed, a large amount of solidifying material does not flow vigorously in the downstream pressure feed line with low supply resistance. In general, it can be said that the second form is less likely to cause obstruction as compared with the first form described above.
0031
On the other hand, in the above description, the powder-based solidifying material is supplied by being put on the pressure air through the first upstream side pressure feeding pipe line 22A, and only the pressure air is supplied through the second upstream side pressure feeding pipe line 22B. In the present invention, the powder-based solidifying material is supplied by applying pressure through each of the first upstream side pressure feeding pipe line 22A and the second upstream side pressure feeding pipe line 22B, or the slurry-based solidifying material is supplied through each of them. It can also be pumped and supplied (with respect to the inventions of claims 3 and 8).
[0032]
<Third form; relating to the invention according to claim 4>
In the third embodiment shown in FIG. 6, the first upstream pressure-feeding pipe line 32A for supplying the powder-based solidifying material to be pumped on the pressure air and the second upstream pressure-feeding pipe line 32B for supplying only the pressure air. And are provided so that the tip outlets are parallel to each other, and only the powder-based solidifying material or the pressure air is distributed and supplied to each of the two parallel downstream pressure feeding pipes 11A and 11B (which communicate with the corresponding solidifying material discharge ports). It is configured to do. Although not shown, the two downstream pressure feeding pipes 11A and 11B pass through the stirring rod 1R and communicate with each solidifying material discharge port. Reference numeral 10B indicates a distributor portion.
0033
Further, the rotation axis AX of the stirring rod 1R is located at a position where the distances connected to the respective base end inlets of the downstream pressure feeding pipes 11A and 11B are substantially the same, and the locus of the base end inlet around the rotation axis AX. Each tip outlet of each upstream side pressure feeding line 32A, 32B is positioned to face in a circle, and each tip outlet of each upstream side pressure sending line 32A, 32B and each base end of each downstream side pressure feeding line 11A, 11B. A swivel is connected to the entrance so that it can communicate with each other. Further, a rotation driving means 1M for rotationally driving the stirring rod 1R is provided, and due to the rotation of the stirring rod 1R, the two downstream pressure feeding pipes 11A and 11B are common around the rotation axis AX of the stirring rod 1R. It is designed to rotate. Up to this point, it is not substantially different from the second form.
0034
Characteristically, the first and second upstream pressure feeding pipes 32A and 32B are integrally and independently of the two downstream pressure feeding pipes 11A and 11B that rotate with the stirring rod 1R. The stirring rod 1R rotates around the rotation axis AX, and the stirring rods 1R including the upstream pressure feeding pipes 32A and 32B and the downstream pressure feeding pipes 11A and 11B are connected via a phase gear. , The first and second upstream pressure feeding pipes 32A and 32B rotate in the same direction in the same direction in common around the rotation axis AX with a difference speed lower than that of the two downstream pressure feeding pipes 11A and 11B. It is designed to do.
0035.
On the other hand, in the first and second upstream pumping pipe lines 32A and 32B, the distal end side portion 32T is parallel to each other, but the proximal end side portion 32P has a double pipe structure, and the proximal end side portion 32P has a double pipe structure. The gap S1 between the inner surface of the outer pipe 33 and the outer surface of the inner pipe 34 is the second upstream side pressure feeding pipe line 32B, and the inside of the inner pipe 34 is the first upstream side pressure feeding pipe line 32A. The upstream double pipe 35 of the double pipe structure is swivel-connected to the base end side portion 32P, and the gap S2 between the outer pipe 35A and the inner pipe 35B of the upstream double pipe 35 corresponds to this. The inner pipe 35B of the upstream double pipe 35 is always connected to the second upstream pressure feed pipe 32B (that is, the gap S1), and the corresponding first upstream pressure feed pipe 32A (that is, the inner pipe 34) is inside the inner pipe 35B. It is designed to always communicate with. Thus, the first and second upstream side pressure feed pipe 32A, regardless of the rotation of 32B, at all times, the first upstream side pressure feed line 32A is supplied solidified material riding a gas, and the second the upstream side pressure feed line 32B, only the gas is supplied.
0036
According to such third embodiment, for example, as compared with the second embodiment described above, the first and second upstream side pressure feed pipe 32A, 32B and the downstream side pressure feed pipe 11A, 11B in the same direction with a differential rate of It can be rotated to reduce the relative rotation speed difference between the two. For example, when the rotational speed of the stirring rod 1R is fast, the downstream side pressure feed pipe 11A, 11B is, a state of communicating with one-to-one with the first upstream side pressure feed line 32A, a second upstream side pressure feed pipe The switching speed between the 32B and the one-to-one communication state can be slowed down to make the distribution and supply of the solidifying material more reliable.
0037
<Fourth form; relating to the inventions according to claims 5 and 9>
In the second embodiment, the first upstream pressure-feeding pipe line 22A that supplies the powder-based solidifying material by pressure on the pressure air and the second upstream pressure-feeding pipe line 22B that supplies only the pressure air are both a stirring rod 1R. The downstream pumping pipes 11A and 11B that communicate with each other change due to the rotation of the above (the same applies to the third embodiment), but it can also be configured as follows.
[0038]
That is, in the fourth embodiment shown in FIG. 7, the two upstream pumping pipes 42A and 42B have a double pipe structure, the inner pipe 43A is the main pipe 42A, and the inner pipe 43A outer surface and the outer pipe 43B inner surface. The gap S3 of the above is used as the sub-pipeline 42B, and the powder-based solidifying material is pumped and supplied from the main pipe with pressure air, and only the pressure air is supplied from the sub-pipeline. The powder-based solidifying material is distributed and supplied to each of the downstream pressure feeding pipes 11A and 11B of the book. Although not shown, the two downstream pressure feeding pipes 11A and 11B pass through the stirring rod 1R and communicate with each of the above-mentioned solidifying material discharge ports. Reference numeral 10C indicates a distributor portion.
[0039]
Characteristically, the two downstream pumping pipes 11A and 11B are commonly rotated around the rotation axis AX at a position where the distances connecting the two downstream pumping pipes 11A and 11B are substantially the same. The main pipe 42A is positioned so that the tip outlet of the main pipe 42A faces the locus circle around the rotation axis AX that passes through the base end inlets of the downstream pressure feeding pipes 11A and 11B. The tip outlet of the sub-pipeline 42B (that is, the gap S3 ) is connected to the tip outlet of the sub-pipeline 42B (that is, the gap S3) by the stirring rod 1R. Regardless of the common rotation of the downstream pressure feeding pipes 11A and 11B due to the rotation, the swivel connection is always made in a state of communicating with the respective base end inlets of the two downstream pressure feeding pipes 11A and 11B.
0040
In this case, the powder-based solidifying material passing through the main pipeline 42A is sequentially solidified in the downstream-side pressure-feeding pipelines 11A and 11B by the common rotation around the rotation axis AX of the downstream-side pressure-feeding pipelines 11A and 11B. Not only the material is supplied, but also the powder-based solidifying material in all the downstream pressure feeding pipes 11A and 11B including the downstream pressure feeding pipe where the pressure air communicates with the main pipe 42A through the auxiliary pipe 42B. Be acted upon.
[0041]
<Other examples of the base end inlet shape of the downstream pumping pipe>
On the other hand, shows a specific example of the inlet shape of the downstream side pressure feed line in FIGS. Although the illustrated reference numerals are different from the above-mentioned forms, they can be applied to all the above-mentioned forms.
[0042]
First, the example shown in FIG. 8, the inlet shape example of the downstream side pressure feed conduit case of different time communicated upstream side pressure feed line (not shown) to each of two downstream side pressure feed pipe 52 and 53 Shown. Conduit 52 and 53 feed the downstream side pressure, respectively, funnel-shaped inlet portion 52A, 53A and the circular tube portion 52B contiguous to the outlet consists of a 53B, the funnel-shaped portion 52A of the downstream side pressure feed pipe 52 and 53 , 53A have different entrance opening areas. More specifically, the funnel-shaped inlet portion 52A, 53A of the present embodiment, one of the funnel-shaped inlet portion 52A is as close becomes the inlet end face of the circular tube portion 52B, the upstream side pressure feed conduit or downstream side pressure feed pipe and forms a shape that extends 2/3 yen in the circumferential direction around the rotation axis, as the other funnel-shaped inlet portion 53A is close to the inlet end face of the circular tube portion 53B, the upstream side pressure feed conduit or downstream It has a shape that extends by 1/3 circle in the circumferential direction centered on the rotation axis of the pumping pipe. Therefore, although the entrances of the funnel-shaped entrance portions 52A and 53A are different, they form a substantially U-shape, and the outlets form a perfect circle.
[0043]
Also, the example shown in FIG. 9 is obtained by increasing the difference in communication time than the example shown in FIG. 8, line 54, 55 feeding the downstream side pressure, the outlet respectively, the funnel-shaped inlet portion 54A, 55A and circular tube portions 54B continuous with, consists of a 55B, the funnel-shaped portion 54A of the downstream side pressure feed conduit 55, the inlet opening area of 55A is different significantly. Specifically, one of the funnel-shaped inlet portion 54A, as the close becomes the inlet end face of the circular tube portion 54B, the circumferential direction around the rotational axis of the upstream side pressure feed conduit or downstream side pressure feed conduit 3 / and none of the 4 yen spreading shape, the circumferential other funnel inlet portion 55A is centered as nearly becomes the inlet end face of the circular tube portion 55B, the axis of rotation of the upstream side pressure feed conduit or downstream side pressure feed pipe It has a shape that spreads by 1/4 circle in the direction. The entrances of the funnel-shaped entrance portions 54A and 55A are different, but have a substantially U-shape, and the outlets have a perfect circle, as in the example of FIG. The spread shape in this example can be easily understood by referring to FIG. 10 showing the II-II cross section in the example shown in FIG.
[0044]
If these examples are applied, when the ground is agitated and mixed by using a stirring rod having a plurality of solidifying material discharge ports in the longitudinal direction, for example, when there are two discharge ports, the above-mentioned FIG. As shown in FIG. 9, the inlet area of the downstream pressure feed line communicating with the upper discharge port is relatively narrow, and the inlet area of the downstream pressure feed line communicating with the lower discharge port is relatively wide. By doing so, the solidifying material discharge time from the lower discharge port, which has a relatively large discharge resistance, can be made longer than that from the upper discharge port.
0045
<Other forms>
On the other hand, the stirring / mixing processing device according to the present invention adopts the structure of the distribution device of the present invention, and therefore, only the distribution device portion can be a single device.
[0046]
The first example (related to the invention according to claim 1) is shown in FIG. In this distribution device example 60, the solidifying material (which may be powder-based or slurry-based) pumped from the upstream-side pumping pipe line 62 is fed by two downstream-side pumping pipes in which the base end inlets are parallel. A rotating shaft at a position where the distance connecting the upstream side pressure feeding pipe line 62 to the respective base end inlets of the two downstream side pressure feeding pipe lines 61A and 61B is substantially the same in order to distribute and supply to each of the roads 61A and 61B. It is configured to rotate around the center AX, and is positioned so that the tip exit of the upstream pumping line 62 faces within the locus circle of the proximal end inlet around the center AX of rotation, and the tip of the upstream pumping line 62. The outlet and the inlets of the base ends of the downstream pressure feeding pipes 61A and 61B are swivel-connected so that the upstream pressure feeding pipe 62 rotates around the rotation axis AX, whereby the upstream pressure feeding pipe 62 The solidifying material passing through the above is configured to be sequentially distributed and supplied to the downstream pressure feeding pipes 61A and 61B. Reference numeral 60M indicates a rotation driving means for rotating the upstream side pressure feeding pipe line 62.
[0047]
In particular, in this example, since the two downstream pressure feeding pipes 61A and 61B are not rotated and the upstream pressure feeding pipe 62 is rotated, the non-rotating upstream side pipe 63 (rotating axis AX) that does not rotate is used. (Does not rotate around) is swiveled so that it can always communicate with the base end inlet of the upstream pumping pipe 62, and the solidifying material from the upstream non-rotating pipe 63 is supplied to the upstream pumping pipe 62. Then, the solidifying material passing through the upstream side pressure feeding pipe line 62 is sequentially distributed and supplied to the downstream side pressure feeding pipe lines 61A and 61B.
0048
In addition, also in this distribution device, according to the above-mentioned example of the stirring / mixing processing device, a plurality of downstream side pressure feeding pipe lines may be configured to rotate in common, or a plurality of downstream side pressure feeding pipe lines may rotate in common. Moreover, the upstream side pressure feeding line can be configured to rotate in the same direction with a difference speed that is lower than those of the plurality of downstream side pressure feeding lines.
[0049]
By using this distributor, only one single-line output type solidifying material pumping pump is used, and the solidifying material from now on can be transferred to a plurality of solidifying material pumping lines (for example, each stirring shaft of a multi-axis deep mixing processor). It becomes possible to distribute and supply to each of the inner pumping lines), and at that time, blockage in each solidifying material pumping line is less likely to occur.
0050
A second example (related to the invention according to claim 2) is shown in FIG. This second example is suitable for pressure feeding of a powder-based solidifying material by pressure, and pressure is supplied from the first upstream pressure feeding pipe 72A of the two upstream pressure feeding pipes 72A and 72B in which the tip outlets are parallel to each other. The powder-based solidifying material to be pumped on the pipe is supplied, and the pressure air is supplied from the second pipeline 72B, and the powder-based solidifying material is supplied to each of the two downstream pressure-feeding pipelines 71A and 71B in which the base end inlets are parallel to each other. It is a distribution device 70 of a solidifying material pumping line that distributes and supplies materials.
0051
In particular, the two downstream pumping pipes 71A and 71B are configured to rotate in common around the rotation axis AX at a position where the distances connecting the two downstream pumping pipes 71A and 71B are substantially the same. Positioned so that the tip outlets of the upstream pressure feeding pipes 72A and 72B face each other in the locus circle around the rotation axis AX passing through the base end inlets of the downstream pressure feeding pipes 71A and 71B. The tip outlets of the pipelines 72A and 72B and the base end inlets of the plurality of downstream pressure feed pipelines are swivel-connected so as to be able to communicate with each other. Reference numeral 70M indicates a rotation driving means for rotating the downstream pressure feeding pipes 71A and 71.
[0052]
Further, in this example, since the two downstream pressure feeding pipes 71A and 71B are rotated in common as described above, the solidifying material pumped through these is made into two non-rotating downstream pipes. It is sent out via (it does not rotate in common around the rotation axis AX). That is, the positions are such that the base end inlets of the non-rotating downstream side pipelines 73A and 73B face in the locus circle around the rotation axis AX passing through the tip outlets of the downstream side pressure feeding pipes 71A and 71B. , The tip outlets of the downstream pressure feeding pipes 71A and 71B and the base end inlets of the non-rotating downstream pipes 73A and 73B are swivel-connected so as to be able to communicate with each other.
[0053]
Therefore, the downstream side pressure feeding pipes 71A and 71B are commonly rotated around the rotation axis AX, and the powder-based solidifying material is supplied under pressure through the first upstream side pressure feeding pipe 72A, and the second If only the pressure air is supplied through the upstream side pressure feeding pipe line 72B, the powder-based solidifying material passing through the first upstream side pressure feeding pipe line 72A will be around the rotation axis AX of the downstream side pressure feeding pipe lines 71A and 71B. By common rotation, the downstream side pressure feeding pipes 71A and 71B are sequentially supplied, and the base end inlets of the downstream side pressure feeding pipes 71A and 71B communicate with the second upstream side pressure feeding pipe 72B to which the pressure air is supplied. At this point, pressure is applied to the powder-based solidifying material in the downstream pressure feeding pipes 71A and 71B. Further, the powder-based solidifying material distributed and supplied into the downstream pressure feeding pipes 71A and 71B is delivered via the non-rotating downstream pipes 73A and 73B.
0054
In this case, the same effect as that of the second embodiment of the above-mentioned stirring / mixing processing apparatus can be obtained, and clogging is less likely to occur.
0055
Further, as in the second embodiment, in the present invention, the powder-based solidifying material is supplied by being put on pressure through each of the first upstream side pressure feeding pipe line 72A and the second upstream side pressure feeding pipe line 72B. Alternatively, the slurry-based solidifying material can be pumped and supplied via each of them (related to the invention according to claim 3).
0056
<Others>
In the above example, the upstream side pressure feed line is one or two, but downstream side pressure feed conduit is a two, the present invention can be respectively 3 or more.
[0057]
【Effect of the invention】
As described above, according to the present invention, it is possible to smoothly and uniformly distribute the solidified material in the pumping line, prevent blockage in the pumping line, and achieve smooth ground stirring and mixing treatment.
[Simple explanation of drawings]
FIG. 1
It is a schematic side view which shows the 1st Embodiment of this invention.
FIG. 2
It is the front view.
FIG. 3
It is an enlarged sectional view of the main part.
FIG. 4
It is a drawing showing the essential components of the I-I cross section in FIG.
FIG. 5
It is an enlarged sectional view of the main part which shows the main part of the 2nd Embodiment.
FIG. 6
It is an enlarged sectional view of the main part which shows the main part of the 3rd Embodiment.
FIG. 7
It is an enlarged sectional view of the main part which shows the main part of 4th Embodiment.
FIG. 8
It is sectional drawing which shows the example of the shape of the inlet part of the downstream side pumping line.
FIG. 9
It is sectional drawing which shows the example of the shape of the inlet part of the downstream side pumping line.
FIG. 10
Is a diagram showing the cross section II-II of FIG.
FIG. 11
It is sectional drawing which shows another example.
FIG. 12
It is sectional drawing which shows another example.
[Explanation of symbols]
1 ... agitation and mixing apparatus of the ground, 11A, 11B ... downstream side pressure feed conduit, 12 ... upstream side pressure feed pipe.