JP3882152B2 - Rocking tube jumping method of rocking valve type concrete pump - Google Patents

Rocking tube jumping method of rocking valve type concrete pump Download PDF

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JP3882152B2
JP3882152B2 JP11503197A JP11503197A JP3882152B2 JP 3882152 B2 JP3882152 B2 JP 3882152B2 JP 11503197 A JP11503197 A JP 11503197A JP 11503197 A JP11503197 A JP 11503197A JP 3882152 B2 JP3882152 B2 JP 3882152B2
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tube
rocking
connecting shaft
swing
concrete
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JPH10288152A (en
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高慶 大村
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石川島建機株式会社
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing

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  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reciprocating Pumps (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明はホッパ内のコンクリートを吸入して吐出させる揺動弁形コンクリートポンプの揺動管を洗浄するときに上方へ跳ね上げるようにする揺動管跳上方法に関するものである。
【０００２】
【従来の技術】
ホッパ内のコンクリートをコンクリートポンプにより吸入吐出させるために切り換えを行わせる吸入吐出弁としては、従来よりすべり弁形式のものと、揺動弁形式のものとがある。
【０００３】
後者の揺動弁形式の吸入吐出弁としては、従来、図５及び図６に示す如き構成のものが知られている。すなわち、前側壁１ａの下部に２つの吸入吐出口２を横に並べて設けたホッパ１の前側部に、上記２つの吸入吐出口２に対応させて２本のコンクリート圧送用シリンダ３を水平に設置し、該コンクリート圧送用シリンダ３に収納したピストン４を図示しない主シリンダのピストンにロッド５を介して一体的に連結して、２つの主シリンダの交互の伸縮動作により上記２つのコンクリート圧送用シリンダ３内のピストン４が交互に前進後退させられるようにしてある。一方、ホッパ１内には、後端をホッパ１の背面軸受１４に回転自在に支承させたＳ字形の揺動管６を収納し、該揺動管６の前端にはシールリング７を取り付けて、該シールリング７部が前記２つの吸入吐出口２に交互に一致できるようにし、上記揺動管６の途中には、ホッパ１の前側壁１ａを貫通させて該前側壁１ａに回転自在に支持させた連結軸８の基端を固定し、且つ該連結軸８の先端部に操作レバー９を一体的に取り付け、該操作レバー９を２本の揺動シリンダ１０と１１の交互伸縮作動により操作レバー９、連結軸８を介して揺動管６を連結軸８の軸心を中心に左右に揺動させるようにしてある。１２は吐出管である。
【０００４】
上記従来のコンクリートポンプの吸入吐出弁を動作させてホッパ１内のコンクリート１３を吸入吐出させるときは、ホッパ１内のコンクリート１３の中で揺動管６を揺動させて行い、揺動管６の前端がいずれか一方の吸入吐出口２に位置させられると、当該吸入吐出口２側のコンクリート圧送用シリンダ３のピストン４を前進させてこれまで吸入したコンクリート１３を揺動管６内を通して吐出させると同時に、別のコンクリート圧送用シリンダ３ではピストン４を後退させてホッパ１内のコンクリート１３を吸入させるようにし、次に、揺動管６を別の吸入吐出口２に切り換えて当該吸入吐出口２側のコンクリート圧送用シリンダ３のピストン４を前進させると同時に他のコンクリート圧送用シリンダ３にはコンクリート１３を吸入させるようにし、かかる動作を繰り返してコンクリートの吸入吐出の切り換えを行うようにしてある。
【０００５】
上記のようにホッパ１内のコンクリート１３を２本のコンクリート圧送用シリンダ３内のピストン４を交互に前進、後退させることによって揺動管６内を通して圧送させるようにしたコンクリートポンプでは、コンクリート１３の圧送作業が終了した際に、揺動管６内に残留しているコンクリート１３の除去処理を行う必要がある。
【０００６】
揺動管６内に残っているコンクリート１３を除去する場合、従来では、吐出管１２との接続部を取り外すことにより行っていたが、かかる方式では、ホッパ１の外側における揺動管後端部周辺を汚してしまうおそれがあると共に、揺動管６内からのコンクリート１３の取り出しに多くの労力を要する問題があるため、簡単な操作で且つ短時間にコンクリート１３を除去して洗浄することができると共に、除去するコンクリート１３を周辺に飛散させるようなことがないような洗浄装置が最近提案されている（特願平３−２９９６００号）。
【０００７】
【発明が解決しようとする課題】
ところが、上記提案されている洗浄装置の場合、モータの駆動で揺動管を上方へ跳ね上げて、ホッパの前側壁に設けておいた開口を通して洗浄管を揺動管に接続し、洗浄管内に詰物を入れて高圧流体で詰物を移動させることにより、揺動管の内部を清掃するようにしたものであるが、ホッパ内にコンクリートが残存していると、揺動管を跳ね上げるときに、底部で骨材の噛み込みを起すことがあり、更に、残存コンクリートが跳ね上げ抵抗力として作用することになって、揺動管を円滑に跳ね上げることができないことがあり、又、特に、低スランプコンクリートを使用している場合には、跳ね上げ抵抗力がより大きくなって、揺動管の跳ね上げを行うことができなくなってしまうことがあるので、これら抵抗力に打ち勝って揺動管を跳ね上げるために、大容量のモータを使用しているのが実状であり、したがって、コスト的な面及びスペース的な面で不利である。
【０００８】
そこで、本発明は、揺動弁形コンクリートポンプにおいて、コンクリートの圧送作業が終了して揺動管を洗浄するときに、小型のモータで或はモータを用いることなく揺動管を円滑に跳ね上げることができるような揺動管跳上方法を提供しようとするものである。
【０００９】
【課題を解決するための手段】
本発明は、上記課題を解決するために、ホッパ内に収納された揺動管に固定されてホッパ前側壁を貫通して突出された連結軸を揺動シリンダで回動させることにより上記揺動管を左右に揺動させて、ホッパ前側壁の左右に設けた２つの吸入吐出口に交互に連通するようにしてある揺動弁形コンクリートポンプで、コンクリートの圧送作業が終了して揺動管を洗浄するときに、上記揺動管をホッパ前側壁上部に設けた開口に一致させるように跳ね上げるようにする揺動管跳上方法において、上記揺動管が横向き姿勢になる中間位置までは、連結軸を操作レバーを介し揺動シリンダで回動させて揺動管を跳ね上げ、しかる後、クラッチの操作で連結軸にモータを連結して、該モータの駆動で連結軸を回動させることにより揺動管を上記開口位置まで跳ね上げるようにする揺動管跳上方法とする。
【００１０】
揺動管が横向き姿勢になるまでは、揺動シリンダの作動で連結軸を回動させるので、ホッパ内に残存するコンクリートが跳ね上げ抵抗力として作用しても、揺動管を支障なく動かすことができる。横向き姿勢になった後の揺動管には骨材の噛み込みもなく、跳ね上げ抵抗も小さいので小型のモータの駆動で容易に跳ね上げることができる。
【００１２】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して説明する。
【００１３】
図１乃至図４は本発明の方法の実施に用いる装置の一形態を示すもので、図５及び図６に示したと同様な構成としてある揺動弁形コンクリートポンプにおいて、ホッパ１の前側壁１ａの２つの吸入吐出口２から離れた上部位置で且つ揺動管６の揺動半径の位置に、該揺動管６の口径よりもやや大きな開口１５を設けて、該開口１５の部分に洗浄管１６が取り付けられるようにし、常時は開口１５を閉じてホッパ１内のコンクリート１３が流出するのを防止できるようにし、一方、上記ホッパ１の前側壁１ａの前方位置に、該前側壁１ａを貫通して前方へ突出している連結軸８の左右方向のいずれか一側方部に、出力軸に駆動スプロケット２０を備えた小型の油圧式モータ２１を設置すると共に、従動スプロケット２３を上記連結軸８の最先端部に回転自在に取り付けて、上記モータ２１の回転力を駆動スプロケット２０からチェーン２２を介して従動スプロケット２３に伝えるようにし、且つ上記従動スプロケット２３と上記操作レバー９との間に、従動スプロケット２３と連結軸８を一体的に連結したり、操作レバー９と連結軸８を一体的に連結したりして、連結軸８に対するモータ２１による回転力と操作レバー９による揺動力の伝達を切り換えるためのクラッチ２４を介装させ、更に、上記ホッパ前側壁１ａから前方へ突出している連結軸８の上記モータ設置側とは反対側に、クラッチ操作装置２５を装備させる。
【００１４】
上記連結軸８の一側方部に設けるモータ２１は、操作レバー９に接続してある揺動シリンダ１０，１１を避けるように配置して、支持フレーム２６を介し上記ホッパ前側壁１ａに固定し、且つ上記モータ２１の出力軸に駆動スプロケット２０を取り付けた構成とし、上記連結軸８の最先端部に回転自在に取り付けた従動スプロケット２３との間にチェーン２２を掛け回し、モータ２１の回転力が駆動スプロケット２０からチェーン２２を介して従動スプロケット２３に伝えられるようにしてある。
【００１５】
一方、上記クラッチ２４は次の如き構成としてある。すなわち、上記連結軸８の中間部にはスプラインスリーブ２７を固設し、該スプラインスリーブ２７に対して内周面のスプライン２８を噛合させるようにし且つ操作レバー９のボス部の内面に設けたスプライン３１に対して外周面のスプライン２９を噛合させるようにしたスライダ３０を、上記連結軸８に沿わせてスライド可能に嵌装し、更に、上記スライダ３０の従動スプロケット２３側へのスライドによりスライダ３０の内周面のスプライン２８と噛合するようにしたスプライン３２を、上記従動スプロケット２３のボス部の外周面に一体に連設し、スライダ３０をホッパ前側壁１ａ側の方向へスライドさせることにより、スライダ３０の内周面のスプライン２８と従動スプロケット２３のボス部外周面のスプライン３２との噛合が解かれると同時に操作レバー９側と連結軸８とを連結させて、操作レバー９による揺動力が操作レバー９のボス部からスライダ３０、スプラインスリーブ２７を介して連結軸８に伝えられるようにすると共に、スライダ３０を従動スプロケット２３側へスライドさせることにより、スライダ３０のスプライン２９と操作レバー９のボス部内周面のスプライン３１との噛合が解かれると同時に連結軸８のスプラインスリーブ２７と従動スプロケット２３側のスプライン３２が連結されて、モータ２１による回転力が従動スプロケット２３からスプライン３２、スライダ３０、スプラインスリーブ２７を介して連結軸８に伝えられるようにしてある。
【００１６】
更に、上記連結軸８の左右方向の他側方部に装備させるクラッチ操作装置２５は、操作レバー９に接続してある揺動シリンダ１０，１１を避けるように操作シリンダ３３を前後方向に配置して、該操作シリンダ３３を支持フレーム３４を介し上記ホッパ前側壁１ａに固定し、且つ該操作シリンダ３３のロッド端に、その先端部を上記スライダ３０の先端部外周面部に形成した受け溝３５に嵌合させるようにした操作アーム１９の中間部を取り付け、更に、該操作アーム１９の末端部に前後方向に延びるガイドスリーブ１７を固設して、該ガイドスリーブ１７を、ホッパ前側壁１ａに前後方向へ向けて突設したガイドロッド１８の外周部に摺動自在に嵌装支持させ、上記操作シリンダ３３を伸縮作動させることにより、ガイドスリーブ１７をガイドロッド１８に沿わせて摺動支持させながら操作アーム１９を前後方向へ移動させて、上記スライダ３０のスライドによりクラッチ２４の切り換え操作を行わせることができるようにしてある。
【００１７】
コンクリートの圧送作業を行っているときは、クラッチ２４のスライダ３０は、図２において実線で示す如く、操作レバー９のボス部のスプライン３１に外周面のスプライン２９が噛合した位置にあり、内周面のスプライン２８は従動スプロケット２３のスプライン３２とは離脱している。したがって、揺動シリンダ１０，１１を交互に伸縮作動させることにより、操作レバー９の揺動力がスライダ３０、スプラインスリーブ２７を介し連結軸８に伝えられて、揺動管６は連結軸８の軸芯回りに左右に揺動させられる。
【００１８】
一方、コンクリート１３の圧送作業が終了して揺動管６を洗浄するときには、先ず、揺動管６が横向き姿勢になるまでは、揺動シリンダ１０，１１の作動により連結軸８を回動させるようにし、しかる後、該連結軸８をモータ２１の駆動で回動させることにより、上記揺動管６を開口１５位置まで跳ね上げるようにする。
【００１９】
詳述すると、揺動管６はコンクリート１３の圧送作業が終了したときには、ホッパ１の前側壁１ａのいずれかの吸入吐出口２に前端が一致しており、且つこの際、クラッチ２４は操作レバー９側に切り換えられているので、かかる状態において、上記クラッチ２４を従動スプロケット２３側へ切り換え、この間に揺動シリンダ１０，１１を原点位置へ戻すようにする。この場合、クラッチ２４の従動スプロケット２３側への切り換えは、図２及び図４において実線の位置にある操作アーム１９を二点鎖線で示す如く前方へ変位させることにより、スライダ３０の内周面のスプライン２８を従動スプロケット２３のスプライン３２に噛合させて、スライダ３０の外周面のスプライン２９を操作レバー９のスプライン３１から離脱させることにより行う。なお、この際、スライダ３０の受け溝３５に先端部が嵌合させられている操作アーム１９は、末端部のガイドスリーブ１７がガイドロッド１８に沿って摺動支持されることから、スライダ３０への力の伝達を偏心させることなく安定して行わせることができる。次いで、クラッチ２４を再び操作レバー９側へ切り換えた後、揺動シリンダ１０，１１を作動させて揺動管６を図１の二点鎖線で示す如き横向きの姿勢にさせる。
【００２０】
このようにして揺動管６が或る高さ位置まで跳ね上げられると、次には、上記クラッチ２４を再び従動スプロケット２３側に切り換え、モータ２１の駆動で連結軸８を回動させることにより、揺動管６を横向き姿勢の位置から、図１の一点鎖線で示す如き開口１５と一致する位置まで跳ね上げるようにさせる。
【００２１】
上記において、コンクリートの圧送作業が終了した後のホッパ１内にコンクリート１３が残存していると、揺動管６の跳ね上げ抵抗となるが、揺動管６が横向き姿勢となるような位置までは揺動シリンダ１０，１１の作動で連結軸８を回動させるので、低スランプコンクリートの場合でも支障なく揺動管６を動かすことができる。又、揺動管６が横向き姿勢となるような高さ位置まで跳ね上げられた状態では、骨材の噛み込みは起らないので、小型のモータ２１の駆動力でも揺動管６を開口１５位置まで容易に跳ね上げることができる。
【００２２】
なお、上記実施の形態では、揺動管６の横向き姿勢から開口１５位置までの跳ね上げを小型のモータ２１の駆動によって行うようにした場合を示したが、モータ２１を使用せずに、揺動シリンダ１０，１１の切り返し作動により行うようにしてもよい。すなわち、揺動管６を揺動シリンダ１０，１１の作動で横向き姿勢としてクラッチ２４を従動スプロケット２３側に切り換えたときに、揺動シリンダ１０，１１を原点位置に復帰させ、しかる後、クラッチ２４を再び操作レバー９側に切り換えて、揺動シリンダ１０，１１を作動させる工程を必要回数繰り返すことにより、揺動管６を開口１５位置まで跳ね上げるようにしてもよい。
【００２３】
又、このように、揺動シリンダ１０，１１の作動だけで揺動管６を跳ね上げる場合は、図４において一点鎖線で示すように、従動スプロケット２３に代えて、外周面にスプラインを有する管体３６を、連結軸８の最先端部に、連結軸８が回転自在となるように嵌装させてホッパ１等の固定側に支持部材３７を介して支持させるようにしてもよく、これにより、モータ２１を不要とすることができる。
【００２４】
【発明の効果】
以上述べた如く、本発明の揺動弁形コンクリートポンプの揺動管跳上方法によれば、ホッパ内に収納された揺動管に固定されてホッパ前側壁を貫通して突出された連結軸を揺動シリンダで回動させることにより上記揺動管を左右に揺動させて、ホッパ前側壁の左右に設けた２つの吸入吐出口に交互に連通するようにしてある揺動弁形コンクリートポンプで、コンクリートの圧送作業が終了して揺動管を洗浄するときに、上記揺動管をホッパ前側壁上部に設けた開口に一致させるように跳ね上げるようにする揺動管跳上方法において、上記揺動管が横向き姿勢になる中間位置までは、連結軸を操作レバーを介し揺動シリンダで回動させて揺動管を跳ね上げ、しかる後、クラッチの操作で連結軸にモータを連結して、該モータの駆動で連結軸を回動させることにより揺動管を上記開口位置まで跳ね上げるようにするので、コンクリートの圧送作業が終了して揺動管を洗浄するときに、ホッパ内にコンクリートが残存していたとしても、揺動管を横向き姿勢位置まで支障なく跳ね上げることができ、その後は骨材の噛み込みもないことから、小型のモータの駆動力で揺動管を開口位置まで跳ね上げることができ、したがって、揺動管を円滑に跳ね上げることができ、コスト的、スペース的にも有利となるという優れた効果を発揮する。
【図面の簡単な説明】
【図１】本発明の方法の実施の一形態を示すもので、図２のＡ−Ａ方向矢視に相当する概略図である。
【図２】本発明の方法の実施に用いる揺動弁形コンクリートポンプの揺動管跳上装置の一例を示す切断側面図である。
【図３】図２のＢ−Ｂ方向矢視図である。
【図４】図３の切断平面図である。
【図５】従来の揺動弁形式の吸入吐出弁の一例を示す切断側面図である。
【図６】図５のＣ−Ｃ方向矢視図である。
【符号の説明】
１ ホッパ
１ａ 前側壁
２ 吸入吐出口
６ 揺動管
８ 連結軸
９ 操作レバー
１０，１１ 揺動シリンダ
１５ 開口
２１ モータ
２４ クラッチ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rocking tube jumping method in which the rocking tube of a rocking valve type concrete pump that sucks and discharges concrete in a hopper is caused to jump upward when cleaning.
[0002]
[Prior art]
As a suction discharge valve for switching the concrete in the hopper to be sucked and discharged by a concrete pump, there are a slip valve type and a swing valve type.
[0003]
As the latter oscillating valve type suction / discharge valve, there is conventionally known a configuration as shown in FIGS. That is, two concrete pumping cylinders 3 are installed horizontally on the front side of the hopper 1 in which the two suction discharge ports 2 are provided side by side at the lower part of the front side wall 1a so as to correspond to the two suction discharge ports 2. The piston 4 housed in the concrete pumping cylinder 3 is integrally connected to a piston of a main cylinder (not shown) via a rod 5, and the two concrete pumping cylinders are alternately expanded and contracted. The piston 4 in 3 is made to advance and retreat alternately. On the other hand, in the hopper 1, an S-shaped oscillating tube 6 whose rear end is rotatably supported by the back bearing 14 of the hopper 1 is housed, and a seal ring 7 is attached to the front end of the oscillating tube 6. The seal ring 7 portion can be alternately aligned with the two suction / discharge ports 2, and the front side wall 1 a of the hopper 1 is penetrated in the middle of the swing pipe 6 to be freely rotatable on the front side wall 1 a. The base end of the supported connecting shaft 8 is fixed, and the operating lever 9 is integrally attached to the distal end portion of the connecting shaft 8, and the operating lever 9 is operated by alternately extending and retracting the two swing cylinders 10 and 11. The swing pipe 6 is swung left and right around the axis of the connecting shaft 8 via the operation lever 9 and the connecting shaft 8. Reference numeral 12 denotes a discharge pipe.
[0004]
When the suction / discharge valve of the conventional concrete pump is operated to suck and discharge the concrete 13 in the hopper 1, the swing pipe 6 is swung in the concrete 13 in the hopper 1. When the front end is positioned at one of the suction discharge ports 2, the piston 4 of the concrete pressure feeding cylinder 3 on the suction discharge port 2 side is advanced to discharge the concrete 13 sucked so far through the rocking pipe 6. At the same time, in another concrete pumping cylinder 3, the piston 4 is moved backward to suck the concrete 13 in the hopper 1, and then the swing pipe 6 is switched to another suction / discharge port 2 to perform the suction / discharge. The piston 4 of the concrete pumping cylinder 3 on the outlet 2 side is advanced, and at the same time, the concrete 13 is sucked into the other concrete pumping cylinder 3. Unishi, are to perform the switching of suction and discharge of the concrete by repeating such operation.
[0005]
In the concrete pump in which the concrete 13 in the hopper 1 is pumped through the swing pipe 6 by alternately moving the pistons 4 in the two concrete pumping cylinders 3 forward and backward as described above, When the pressure feeding operation is completed, it is necessary to remove the concrete 13 remaining in the swing pipe 6.
[0006]
Conventionally, when removing the concrete 13 remaining in the rocking pipe 6, the connecting part with the discharge pipe 12 is removed, but in this method, the rear end of the rocking pipe on the outside of the hopper 1. Since there is a possibility that the surroundings may be soiled and there is a problem that a lot of labor is required for taking out the concrete 13 from the rocking pipe 6, it is possible to remove and clean the concrete 13 in a short time with a simple operation. Recently, there has been proposed a cleaning device that can be used and that the concrete 13 to be removed is not scattered around the periphery (Japanese Patent Application No. 3-299600).
[0007]
[Problems to be solved by the invention]
However, in the case of the cleaning device proposed above, the motor is driven to jump up the swing tube, and the cleaning tube is connected to the swing tube through the opening provided in the front side wall of the hopper. The inside of the rocking tube is cleaned by putting the filling and moving the filling with a high-pressure fluid, but if concrete remains in the hopper, Aggregate biting may occur at the bottom, and the remaining concrete may act as a resistance to jumping up, and the swinging pipe may not be able to jump up smoothly. If you are using slump concrete, the resistance to jumping will be larger, and you may not be able to jump up the swing pipe. Jump over In order, a circumstances that are using a large-capacity motor, therefore, is disadvantageous in cost aspects and space of view.
[0008]
Accordingly, the present invention provides a rocking valve type concrete pump that, when the concrete pumping operation is completed and the rocking pipe is cleaned, the rocking pipe is smoothly raised without using a small motor or a motor. It is an object of the present invention to provide a rocking tube jumping method that can be used.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides the above-described swing by rotating a connecting shaft fixed to a swing pipe accommodated in a hopper and projecting through a front side wall of the hopper with a swing cylinder. This is a rocking valve type concrete pump that swings the pipe left and right and communicates alternately with the two suction and discharge ports provided on the left and right of the hopper front side wall. In the rocking tube jumping method in which the rocking tube is flipped up so as to coincide with the opening provided in the upper portion of the hopper front side wall, Then, the connecting shaft is rotated by the swing cylinder via the operating lever to jump up the swing tube, and then the motor is connected to the connecting shaft by operating the clutch, and the connecting shaft is rotated by driving the motor. The swinging tube to the open position. The swing pipe pop-how to prevent splashed.
[0010]
Until the swing pipe is in the horizontal position, the connecting shaft is rotated by the operation of the swing cylinder. Therefore, even if the concrete remaining in the hopper acts as a spring-up resistance, the swing pipe can be moved without any problem. Can do. Since the rocking tube does not bite into the swinging tube after being in the horizontal orientation and has a small spring-up resistance, it can be easily flipped up by driving a small motor.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
1 to 4 show an embodiment of an apparatus used for carrying out the method of the present invention. In a swing valve concrete pump having the same configuration as that shown in FIGS. 5 and 6, the front wall 1a of the hopper 1 is shown. An opening 15 slightly larger than the diameter of the oscillating tube 6 is provided at an upper position away from the two suction / discharge ports 2 and at a position of the oscillating radius of the oscillating tube 6, and the portion of the opening 15 is cleaned. The pipe 16 is attached, and the opening 15 is normally closed so that the concrete 13 in the hopper 1 can be prevented from flowing out. On the other hand, the front side wall 1a is placed in front of the front side wall 1a of the hopper 1. A small hydraulic motor 21 having a drive sprocket 20 on the output shaft is installed on either side of the connecting shaft 8 that passes through and protrudes forward, and the driven sprocket 23 is connected to the connecting shaft. 8 cutting-edge The rotational force of the motor 21 is transmitted from the drive sprocket 20 to the driven sprocket 23 via the chain 22 and between the driven sprocket 23 and the operation lever 9. For switching the transmission of the rotational force by the motor 21 and the swinging force by the operation lever 9 to the connection shaft 8 by integrally connecting the connection shaft 8 or by integrally connecting the operation lever 9 and the connection shaft 8. A clutch operating device 25 is mounted on the opposite side of the connecting shaft 8 that protrudes forward from the hopper front side wall 1a to the motor installation side.
[0014]
The motor 21 provided on one side of the connecting shaft 8 is arranged so as to avoid the swing cylinders 10 and 11 connected to the operation lever 9 and is fixed to the hopper front side wall 1a via a support frame 26. The drive sprocket 20 is attached to the output shaft of the motor 21, and the chain 22 is wound around the driven sprocket 23 that is rotatably attached to the most distal end portion of the connecting shaft 8. Is transmitted from the drive sprocket 20 to the driven sprocket 23 via the chain 22.
[0015]
On the other hand, the clutch 24 has the following configuration. That is, a spline sleeve 27 is fixed to the intermediate portion of the connecting shaft 8, and the spline 28 on the inner peripheral surface is engaged with the spline sleeve 27 and the spline provided on the inner surface of the boss portion of the operating lever 9. A slider 30 having an outer peripheral surface spline 29 meshed with 31 is slidably fitted along the connecting shaft 8, and the slider 30 is slid toward the driven sprocket 23 side. A spline 32 that meshes with the spline 28 on the inner peripheral surface of the boss is integrally connected to the outer peripheral surface of the boss portion of the driven sprocket 23, and the slider 30 is slid toward the hopper front side wall 1a. Is the meshing between the spline 28 on the inner peripheral surface of the slider 30 and the spline 32 on the outer peripheral surface of the boss portion of the driven sprocket 23 completed? At the same time, the operating lever 9 side and the connecting shaft 8 are connected so that the swinging force by the operating lever 9 is transmitted from the boss portion of the operating lever 9 to the connecting shaft 8 via the slider 30 and the spline sleeve 27. By sliding the slider 30 to the driven sprocket 23 side, the spline 29 of the slider 30 and the spline 31 on the inner peripheral surface of the boss portion of the operating lever 9 are disengaged, and at the same time, the spline sleeve 27 of the connecting shaft 8 and the driven sprocket 23 are disengaged. The spline 32 on the side is connected so that the rotational force of the motor 21 is transmitted from the driven sprocket 23 to the connecting shaft 8 via the spline 32, slider 30, and spline sleeve 27.
[0016]
Further, the clutch operating device 25 provided on the other side portion of the connecting shaft 8 in the left-right direction has the operating cylinder 33 arranged in the front-rear direction so as to avoid the swing cylinders 10, 11 connected to the operating lever 9. The operation cylinder 33 is fixed to the hopper front side wall 1a via the support frame 34, and the tip end of the operation cylinder 33 is formed in the receiving groove 35 formed on the outer peripheral surface of the tip end of the slider 30. An intermediate portion of the operation arm 19 adapted to be fitted is attached, and a guide sleeve 17 extending in the front-rear direction is fixed to the end portion of the operation arm 19, and the guide sleeve 17 is attached to the front side wall 1a of the hopper. The guide sleeve 17 is attached to and supported by the outer periphery of the guide rod 18 projecting in the direction of sliding, and the operation cylinder 33 is expanded and contracted, whereby the guide sleeve 17 is moved. And along a Doroddo 18 the operating arm 19 is moved in the front-rear direction while sliding the support, it is to be able to perform the switching operation of the clutch 24 by the sliding of the slider 30.
[0017]
When the concrete is being pumped, the slider 30 of the clutch 24 is in a position where the spline 29 on the outer peripheral surface meshes with the spline 31 on the boss portion of the operating lever 9 as shown by the solid line in FIG. The surface spline 28 is separated from the spline 32 of the driven sprocket 23. Therefore, by alternately extending and retracting the swing cylinders 10 and 11, the swing force of the operation lever 9 is transmitted to the connecting shaft 8 via the slider 30 and the spline sleeve 27, and the swing tube 6 is connected to the shaft of the connecting shaft 8. It can be swung left and right around the core.
[0018]
On the other hand, when the concrete pipe 13 is finished pumping and the rocking tube 6 is washed, first, the connecting shaft 8 is rotated by the operation of the rocking cylinders 10 and 11 until the rocking tube 6 is in the horizontal orientation. After that, by rotating the connecting shaft 8 by driving the motor 21, the swing pipe 6 is jumped up to the position of the opening 15.
[0019]
More specifically, the swing pipe 6 has its front end coincident with one of the suction and discharge ports 2 of the front side wall 1a of the hopper 1 when the pressure feeding operation of the concrete 13 is completed, and at this time, the clutch 24 is operated by the operation lever. In this state, the clutch 24 is switched to the driven sprocket 23 side, and the swing cylinders 10 and 11 are returned to the home position during this time. In this case, the clutch 24 is switched to the driven sprocket 23 side by displacing the operation arm 19 located at the solid line in FIG. 2 and FIG. 4 forward as indicated by a two-dot chain line. The spline 28 is engaged with the spline 32 of the driven sprocket 23, and the spline 29 on the outer peripheral surface of the slider 30 is separated from the spline 31 of the operation lever 9. At this time, the operating arm 19 whose tip is fitted in the receiving groove 35 of the slider 30 is slidably supported along the guide rod 18 with the guide sleeve 17 at the end, so that the slider 30 is moved to the slider 30. The transmission of the force can be performed stably without decentering. Next, after the clutch 24 is switched again to the operation lever 9 side, the swing cylinders 10 and 11 are operated to bring the swing pipe 6 into a lateral posture as shown by a two-dot chain line in FIG.
[0020]
When the swing pipe 6 is flipped up to a certain height in this manner, the clutch 24 is switched to the driven sprocket 23 side again, and the connecting shaft 8 is rotated by driving the motor 21. Then, the swinging tube 6 is caused to jump from the position in the horizontal orientation to a position that coincides with the opening 15 as indicated by the one-dot chain line in FIG.
[0021]
In the above description, if the concrete 13 remains in the hopper 1 after the concrete pumping operation is finished, the rocking pipe 6 will be lifted up to a position where the rocking pipe 6 is in the horizontal posture. Since the connecting shaft 8 is rotated by the operation of the swing cylinders 10 and 11, the swing tube 6 can be moved without any trouble even in the case of low slump concrete. In addition, in the state where the swing tube 6 is flipped up to a height position where the swing tube 6 is in the horizontal posture, the biting of the aggregate does not occur, so the swing tube 6 can be opened with the driving force of the small motor 21. You can easily jump to the position.
[0022]
In the above embodiment, the case where the swing pipe 6 is flipped up from the lateral position to the position of the opening 15 by driving the small motor 21 is shown. You may make it carry out by the turning-back action | operation of the moving cylinders 10 and 11. That is, when the swing pipe 6 is turned to the horizontal position by the operation of the swing cylinders 10 and 11 and the clutch 24 is switched to the driven sprocket 23 side, the swing cylinders 10 and 11 are returned to the home position, and then the clutch 24 May be switched again to the operation lever 9 side, and the step of operating the swing cylinders 10 and 11 may be repeated as many times as necessary, so that the swing tube 6 jumps up to the position of the opening 15.
[0023]
Further, when the swing pipe 6 is flipped up only by the operation of the swing cylinders 10 and 11 as described above, a pipe having a spline on the outer peripheral surface in place of the driven sprocket 23 as shown by a one-dot chain line in FIG. The body 36 may be fitted to the most distal end portion of the connecting shaft 8 so that the connecting shaft 8 is rotatable and supported on the fixed side of the hopper 1 or the like via the support member 37, thereby The motor 21 can be dispensed with.
[0024]
【The invention's effect】
As described above, according to the rocking pipe pop-how of the swing valves form concrete pump according to the invention, it is fixed to the oscillating tube housed in Ho Tsu the path protruded through the hopper front wall An oscillating valve type in which the oscillating tube is oscillated left and right by rotating the connecting shaft with an oscillating cylinder, and is alternately communicated with two suction and discharge ports provided on the left and right of the hopper front side wall. When a concrete pump is used to wash the rocking pipe after the concrete pumping operation is finished, the rocking pipe jumping method is made such that the rocking pipe jumps up so as to coincide with the opening provided on the upper side wall of the hopper. In this case, the connecting shaft is rotated by an oscillating cylinder via an operating lever to flip the oscillating tube up to an intermediate position where the oscillating tube is in the horizontal posture, and then the motor is applied to the connecting shaft by operating the clutch. Connect and rotate the connecting shaft by driving the motor. Therefore, even if the concrete remains in the hopper when the concrete pumping operation is finished and the rocking tube is cleaned, the rocking tube is lifted up. Can be lifted up to the horizontal posture position without hindrance, and after that there is no biting of aggregate, so the swinging tube can be jumped up to the open position with the driving force of a small motor. Can be lifted up smoothly, and it has an excellent effect of being advantageous in terms of cost and space .
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an embodiment of the method of the present invention and corresponding to the direction of arrows AA in FIG. 2;
FIG. 2 is a cut side view showing an example of a rocking tube jumping device of a rocking valve type concrete pump used for carrying out the method of the present invention.
3 is a view taken in the direction of arrows BB in FIG.
4 is a cut plan view of FIG. 3. FIG.
FIG. 5 is a cut-away side view showing an example of a conventional swing valve type suction / discharge valve.
6 is a view in the direction of arrows CC in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hopper 1a Front side wall 2 Suction / discharge port 6 Swing pipe 8 Connecting shaft 9 Operation lever 10, 11 Swing cylinder 15 Opening 21 Motor 24 Clutch

Claims (1)

ホッパ内に収納された揺動管に固定されてホッパ前側壁を貫通して突出された連結軸を揺動シリンダで回動させることにより上記揺動管を左右に揺動させて、ホッパ前側壁の左右に設けた２つの吸入吐出口に交互に連通するようにしてある揺動弁形コンクリートポンプで、コンクリートの圧送作業が終了して揺動管を洗浄するときに、上記揺動管をホッパ前側壁上部に設けた開口に一致させるように跳ね上げるようにする揺動管跳上方法において、上記揺動管が横向き姿勢になる中間位置までは、連結軸を操作レバーを介し揺動シリンダで回動させて揺動管を跳ね上げ、しかる後、クラッチの操作で連結軸にモータを連結して、該モータの駆動で連結軸を回動させることにより揺動管を上記開口位置まで跳ね上げるようにすることを特徴とする揺動弁形コンクリートポンプの揺動管跳上方法。  The oscillating tube is oscillated left and right by rotating a connecting shaft fixed to the oscillating tube accommodated in the hopper and projecting through the hopper front side wall by an oscillating cylinder. When the concrete pumping operation is finished and the rocking pipe is washed with the rocking valve type concrete pump that is alternately communicated with the two suction and discharge ports provided on the left and right of the rocking pipe, the rocking pipe is In the swinging tube jumping method in which the swinging tube jumps up so as to coincide with the opening provided in the upper portion of the front side wall, the connecting shaft is moved by the swinging cylinder through the operation lever until the intermediate position where the swinging tube is in the horizontal posture. Rotate the swing tube up, and then connect the motor to the connecting shaft by operating the clutch, and rotate the connecting shaft by driving the motor to jump the swing tube to the open position. It is characterized by Oscillating tube lift-up method of the oscillating valve form concrete pumps.
JP11503197A 1997-04-18 1997-04-18 Rocking tube jumping method of rocking valve type concrete pump Expired - Fee Related JP3882152B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP11503197A JP3882152B2 (en) 1997-04-18 1997-04-18 Rocking tube jumping method of rocking valve type concrete pump
KR1019970042367A KR100458973B1 (en) 1997-04-18 1997-08-29 Rotating pipe drawing method of rocking valve concrete pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11503197A JP3882152B2 (en) 1997-04-18 1997-04-18 Rocking tube jumping method of rocking valve type concrete pump

Publications (2)

Publication Number Publication Date
JPH10288152A JPH10288152A (en) 1998-10-27
JP3882152B2 true JP3882152B2 (en) 2007-02-14

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JP11503197A Expired - Fee Related JP3882152B2 (en) 1997-04-18 1997-04-18 Rocking tube jumping method of rocking valve type concrete pump

Country Status (2)

Country Link
JP (1) JP3882152B2 (en)
KR (1) KR100458973B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102606472A (en) * 2012-03-23 2012-07-25 三一重工股份有限公司 Distribution valve for pumping system, pumping system and engineering machinery
CN102619717A (en) * 2012-04-25 2012-08-01 中联重科股份有限公司 Pumping distribution mechanism, pumping device, control method of pumping device and concrete pump truck

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2903749C2 (en) * 1979-02-01 1983-11-10 Karl Dipl.-Ing. 7000 Stuttgart Schlecht Piston pump with an S-shaped swivel tube
JP3151536B2 (en) * 1990-11-26 2001-04-03 石川島建機株式会社 Method and apparatus for cleaning suction / discharge valve of high viscosity fluid pump
JPH08144942A (en) * 1994-11-24 1996-06-04 Ishikawajima Constr Mach Co Oscillation valve type concrete pump
JPH09222073A (en) * 1996-02-19 1997-08-26 Ishikawajima Constr Mach Co Auxiliary device for operating oscillation pipe for oscillation valve type concrete pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102606472A (en) * 2012-03-23 2012-07-25 三一重工股份有限公司 Distribution valve for pumping system, pumping system and engineering machinery
CN102606472B (en) * 2012-03-23 2015-02-18 三一重工股份有限公司 Pumping system and engineering machinery
CN102619717A (en) * 2012-04-25 2012-08-01 中联重科股份有限公司 Pumping distribution mechanism, pumping device, control method of pumping device and concrete pump truck
CN102619717B (en) * 2012-04-25 2014-09-17 中联重科股份有限公司 Pumping distribution mechanism, pumping device, control method of pumping device and concrete pump truck

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JPH10288152A (en) 1998-10-27
KR100458973B1 (en) 2005-04-06

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