JP2004176450A

JP2004176450A - Operation control system for sluice opening and closing device

Info

Publication number: JP2004176450A
Application number: JP2002345467A
Authority: JP
Inventors: Nobuhito Hashimoto; 信仁橋本; Hideto Akimoto; 英人秋元; Jiro Ondo; 治郎音頭; Mitsumasa Hiramoto; 光政平本; Katsuyoshi Takahata; 勝義高畑
Original assignee: Hokoku Kogyo Co Ltd; Ministry of Land Infrastructure Transport and Tourism Kanto Regional Development Bureau
Current assignee: Hokoku Kogyo Co Ltd; Ministry of Land Infrastructure Transport and Tourism Kanto Regional Development Bureau
Priority date: 2002-11-28
Filing date: 2002-11-28
Publication date: 2004-06-24
Anticipated expiration: 2022-11-28
Also published as: JP3668943B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation control system for a sluice opening and closing device capable of opening and closing the sluice opening and closing device provided with a self-weight descent type gate at a high speed and allowing one operator to remote-control a plurality of sluices in a short period of time. <P>SOLUTION: The gate connected with a rack bar is lowered by its self-weight while controlling its speed by a centrifugal brake (step S4), and descent due to self-weight of the gate is stopped in the vicinity of a section where the sluice is fully closed (step S5). Then, operation is switched to electric operation by an electric motor (step S6), and the gate is lowered until it is fully closed by reducing descent speed of the gate down to the lower speed than self-weight descent speed (step S7). In this operation control system, the sluice can be opened and closed at the high speed and one operator can remote-control a plurality of sluices. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、自重降下式ゲートを備えた水門開閉装置の操作制御システムに係り、特に、補助的に電動機を使用して水門の開、閉、停止の操作を行う水門開閉装置の操作制御システムに関するものである。
【０００２】
【従来の技術】
一般に水門開閉装置は、機側操作盤の押釦操作で電動機により水門の開、閉、停止の操作を行うことができる。自重降下式ゲートにより水門の閉操作を行うときは、水門開閉装置に組み込まれているレバーを人力にて操作することにより行うことができる。遠方からの操作で電動機により水門の開、閉、停止の操作を行う場合は、押釦操作で電動機を作動させて行うことができる。自重降下式ゲートによる水門の閉操作を遠方からの操作で行う場合は、水門開閉装置に内蔵した電磁クラッチを押釦操作で開状態にすることで行うことができる。
【０００３】
従来の自重降下式ゲートの緊急遮断システムとして、例えば、特許文献１には、タイマー回路に予め設定されている時間以内に扉体の自重降下により水門が全閉されない場合は、コントローラから「入り信号」を出力して電磁クラッチを結合させて、開閉操作機構部と扉体昇降機構部を連動状態に保持したのち、コントローラから開閉操作機構部の電動機に起動信号を出力して、電動機を扉体閉方向に起動させて、扉体を強制的に下死点まで降下させることで水門を全閉することが開示されている。
【０００４】
【特許文献１】
特開２００１−２３４５２５号公報
【０００５】
【発明が解決しようとする課題】
【０００６】
水門の閉操作を遠方から電動機を作動させて行う場合、ゲートの開閉速度が０．３ｍ／ｍｉｎであるため揚程が高い場合に閉操作の所要時間が多く必要となり、例えば、揚程３ｍの場合の所要時間は１０分必要とする。また、遠方から複数の水門操作を遠隔制御する場合、１門の水門が運転開始後停止するまでは、次の水門操作に移行しない運用を行うことが多いため、１門の水門の操作時間が長くなると、一人が遠隔制御する水門の門数に限りがある。
水門の閉操作時間を短縮する手段として、ポールチェンジ電動機による速度変換機能を持たせて水門の閉操作時のみ高速度とする方法もあるが、２〜４倍程度しか水門の降下速度を上昇させることができない。また、他の手段として、インバータ電動機を使用し速度変換を行う方法もあるが、電動機の高回転に対する軸受等の問題や、インバータの起動トルクを大きくしなければならない等の問題が発生するため設備費用が高価なものとなる。
【０００７】
水門の閉操作をゲートの自重降下によってのみ行う場合、押釦操作による電気信号にて電磁クラッチを解除作動させ全閉までゲートを自重降下させていたが、降下速度が６ｍ／ｍｉｎ以下の急降下であるため、ゲートの着床時の衝撃により水密ゴムを痛めたり、構造物に対してもゲートの損傷、ラック棒の座屈、開閉装置アンカーボルトの引き抜き、門柱の割れなどのおそれがある。また、木、石、堆積があった場合局部的に荷重が作用するおそれがあるため、ゲートが閉じるときの衝撃荷重に対し強度を有するような設計を行う必要がある。さらに、水位がある場合は尚更異物の有無の確認ができないという問題がある。
また、特許文献１に開示された自重降下式ゲートは、水位が急上昇した緊急時に扉体が全閉しない場合に電動機を起動させて、扉体を強制的に降下させるものであり、通常の水門の開閉操作において自重降下式ゲートの開閉操作を制御することを考慮したものではない。
【０００８】
本発明は、かかる点に鑑みてなされたものであり、自重降下式ゲートを備えた水門開閉装置の開閉操作を高速度で安全確実に操作することができると共に一人の作業員により複数の水門を遠隔制御できる水門開閉装置の操作制御システム，特にラック式水門開閉装置の操作制御システムを提供することを目的とする。
【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の手段として、請求項１に記載した発明は、最初にブレーキで速度制御をしながら自重降下させ、水門が全閉する近傍でゲートの自重による降下を停止し、その後電動操作に切り替えて、ゲートの降下速度を自重降下速度よりも低速にして、ゲートを全閉まで下降させることを特徴とする。
【００１０】
このように構成することにより、遠隔操作により水門開閉装置の開閉操作をする場合ゲートの自重降下を用いることで、通常の電動操作による水門の閉操作の７倍から２０倍程度の速度で水門の閉操作を行うことができるため、水門の閉操作の所要時間を大幅に短縮することができる。
【００１１】
請求項２に記載した発明は、請求項１に記載した発明において、ゲートの自重による降下操作後、自重降下に要する時間経過時点で電動操作に切り替えてゲートを全閉まで下降させることを特徴とする。
【００１２】
このように構成することにより、水門が閉操作中に異常事態の発生によりゲートの自重降下が妨げられて途中で停止した場合も、ゲートの自重降下に必要な時間経過後、自動的に電動操作に切り替えて水門が全閉するまでゲートの下降操作を行うことができる。
【００１３】
請求項３に記載した発明は、請求項１に記載した発明において、ゲートの自重による降下中に、開度信号が変化しない場合、自重で降下するゲートが途中で停止していると判断して、電動操作に切替えてゲートを全閉まで下降させることを特徴とする。
【００１４】
このように構成することにより、水門が閉操作中に異常事態の発生によりゲートの自重降下が妨げられて途中で停止した場合も、ゲートの自重降下中に開度信号の変化を検出し、変化がない場合はゲートが途中で停止していると判断して自動的に電動操作に切り替えて水門が全閉するまでゲートの下降操作を行う。
【００１５】
請求項４に記載した発明は、請求項１〜３のいずれかに記載した発明において、複数の水門を遠隔集中制御することを特徴とする。
【００１６】
このように構成することにより、複数の水門の遠隔制御を行う場合、一人の操作員により制御できる水門の門数を多くすることができる。
【００１７】
請求項５に記載した発明は、請求項１〜４のいずれかに記載した発明において、前記水門開閉装置は、電気信号により断接操作してラック棒に連結したゲートを自重降下させる電磁クラッチを備えたラック式水門開閉装置であることを特徴とする。
【００１８】
このように構成することにより、ラック式水門開閉装置は、電磁クラッチを備えることで、噛合い効率が良く比較的小さな自重でも、自重降下を行うことができる。また、高効率であることから、自重降下速度を速くすることが可能である。
【００１９】
【発明の実施の形態】
以下、本発明の実施の形態にかかる水門開閉装置の操作制御システムを、図１〜図５に基づいて詳細に説明する。
まず、図１に基いて、本発明の実施の形態に係る水門開閉装置の操作制御システムに用いるラック式水門開閉装置を説明する。ラック式水門開閉装置は、図示しないゲートに連結したラック棒１と、このラック棒１に噛み合い連結した歯車列（ピン歯車２，平歯車３，４，５）と、歯車列に噛み合い連結した遊星歯車６と、遊星歯車６の太陽歯車に駆動力を入力して歯車列を介してラック棒１を上下動させる電動機１２と、遊星歯車６のリング歯車に連結した電磁クラッチ７と、この電磁クラッチ７に平歯車８を介して連結した遠心ブレーキ９とから概略構成されている。符号１１は、ゲートの落下を防止する落下防止用ブレーキ、符号１３は、遊星歯車６と電動機１２との間に介在させたブレーキ、符号１４は、ゲートを手動で上下動させる手動操作ハンドルである。
【００２０】
つぎに、このようなラック式水門開閉装置の操作を説明する。
ゲートの自重降下を行う場合、ラック式水門開閉装置に内臓した電磁クラッチ７は、常時はバネ力により連結され停止状態であるが、遠隔操作により電磁クラッチ７に通電して電磁クラッチ７の解放操作をすると電磁クラッチ７が解放されて、ゲートは自重降下できる状態となる。また、遠方操作盤からの電気信号にて、電磁クラッチ７を解放させるとゲートは落下防止用ブレーキ１１から切り放される。そして、ラック棒１にゲート荷重が作用すると、ゲートは自重降下を開始する。その際、ゲートは、落下防止用ブレーキ１１から切り放されて、遠心ブレーキ９に連結されるため、ゲートの落下速度は遠心ブレーキ９にて一定速度以下に速度制御される。また、電磁クラッチ７の「解放」操作により、電磁クラッチ７が落下防止用ブレーキ１１との連結状態から切り離されてゲートが自重降下を行う場合、ゲートの自重降下時の荷重は、ラック棒１からピン歯車２，平歯車３，平歯車４及び平歯車５の歯車列に伝達され、また、歯車列から遊星歯車６のリング歯車、平歯車８を介して遠心ブレーキ９に伝達される。ゲートを上昇させる場合は、電動機１２を起動して、遊星歯車６及び歯車列を介してラック棒１を上昇させてゲートを上昇させる。また、手動操作ハンドル１４によりラック棒１を直接上昇させてゲートを上昇させることもできる。
【００２１】
つぎに、本発明の第一実施形態に係る水門開閉装置の操作制御システムを図２及び図３に基づいて説明する。
本発明の実施の形態に係る水門開閉装置は、基本的には図１に示すラック式水門開閉装置を用いるが、図２には、主要な構成のみを示す。
水門開閉装置２３は、自重降下用の電磁クラッチ７と、図示しないゲートを上下動させる電動機１２と、ゲートの開度を表す信号を発信する制限開閉器又は開度発信器２４を備えている。また、機側操作盤２２は、ゲートの近傍に設置されており、ゲートが全閉近傍の位置にあることを制限開閉器又は開度発信器２４の出力信号に基いて検出する全閉近傍検知回路２５と、電磁クラッチ７の「連結」または「解放」の操作信号を発信する電磁クラッチ制御回路２６と、電動機１２の駆動信号を発信する電動機制御回路２７と、ゲートの自重降下指令後の経過時間をカウントする経過時間カウント回路２８を備えている。この機側操作盤２２は、遠方から遠隔操作信号を出力する遠方操作盤２１に接続されている。そして、ゲートの自重降下操作を行う場合には、まず、遠方操作盤２１からゲートの自動降下指令信号を出力する。このゲートの自重降下指令信号が機側操作盤２２の電磁クラッチ制御回路２６に入力されると、電子クラッチ制御回路２６から水門開閉装置２３の電磁クラッチ７に「解放」信号、すなわち、ゲートの自重降下指令信号が出力されて、電磁クラッチ７は解放されて、ゲートは自重降下を開始する。ゲートが自重降下すると、制限開閉器又は開度発信器２４によりゲートの開度を検出し、全閉近傍検出回路２５によりゲートがどの位置にいてゲートがどれくらい開いているのかの開度を検出する。その後、ゲートが設定された開度に到達すると、電磁クラッチ制御回路２６から電磁クラッチ７に「連結」信号が出力され、電磁クラッチ７が連結されてゲートの自重降下は停止する。そして、電動機制御回路２７から、電動機１２に駆動信号を出力して、電動機１２の駆動力によりゲートを全閉位置まで下降させる。電磁クラッチ制御回路２６から自重降下指令が出力されている状態で、自重降下指令の経過時間カウント回路２８により一定時間が経過した後に全閉近傍検出回路２５により開度が任意に設定された開度に到達していないと判断されれば、電磁クラッチ制御回路２６から電磁クラッチ７に「連結」信号を出力して、電磁クラッチ７を連結すると共に、電動機制御回路２７から電動機１２に下降指令を出力して、ゲートを全閉位置まで下降させる。
【００２２】
つぎに、本発明の第一実施形態に係る水門閉門装置の操作制御システムの制御動作を図３のフローチャートにて説明する。
今、ゲートが上死点まで上昇して水門が全開している状態において、遠方操作盤２１から機側操作盤２２にゲートの自重降下併用閉を指令する（ステップＳ１）。機側操作盤２２はラック式水門開閉装置２３に内蔵された電磁クラッチ７に通電して（ステップＳ２）、電磁クラッチ７の連結を解除して制御システムをスタートさせる。ステップＳ２で電磁クラッチ７の連結が解除されると、ステップＳ３でゲートは遠心ブレーキ９により減速されながら適切な速度で自重降下を開始する。ゲートが通常の自重降下を行うときは、ステップＳ５で任意に設定された開度（開度３０ｃｍ）にて電磁クラッチ７の通電を解除し、電磁クラッチ７を連結する。その後、ステップＳ６で電動閉操作に切り替わりゲートを電動機１２により低速で下降させる。ステップＳ７で水門が全閉したことを確認して電動機１２を自動停止させて、ステップＳ８で水門の閉操作が完了する。
また、ステップＳ３でゲートが自重降下を開始した後、設定時間内に任意に設定された開度に到達しないときは、ゲートが閉操作中に何かの異常事態が発生したと判断して、ステップＳ４で電磁クラッチ７の通電を解除して、ステップＳ６で電動閉操作に切り替えてゲートを電動機１２により低速で下降させる。以下同様にして、ステップＳ７でゲートが全閉したことを確認して電動機１２を自動停止させて、ステップＳ８で水門の閉操作が完了する。
【００２３】
つぎに、本発明の第二実施形態に係る水門開閉装置の操作制御システムを図４及び図５に基づいて説明する。
本発明の実施の形態に係る水門開閉装置は、基本的には図１に示すラック式水門開閉装置を用いるが、図４には主要な構成のみを示す。
水門開閉装置３３は、自重降下用の電磁クラッチ７と、図示しないゲートを上下動させる電動機１２と、ゲートの開度を表す信号を発信する制限開閉器又は開度発信器３４と、ゲートの開度の変化を表す信号を発信する開度発信器３８を備えている。また、機側操作盤３２は、ゲートの近傍に設けられた機側操作室に設置されており、ゲートが全閉近傍の位置にあることを制限開閉器又は開度発信器３４の出力信号に基いて検出する全閉近傍検知回路３５と、電磁クラッチ７の「連結」又は「解放」の操作信号を発信する電磁クラッチ制御回路３６と、電動機１２の駆動信号を発信する電動機制御回路３７と、ゲートの自重降下指令後にゲートの開度の変化を検出する開度信号変化有無検出回路３９を備えている。この機側操作盤３２は遠方から遠隔操作信号を出力する遠方操作盤３１に接続されている。そして、ゲートの自重降下操作を行う場合には、まず、遠方操作盤３１からゲートの自重降下指令信号を出力する。このゲートの自重降下指令信号が機側操作盤３２の電磁クラッチ制御回路３６に入力されると、電磁クラッチ制御回路３６から水門開閉装置３３の電磁クラッチ７に「解放」信号、すなわち、ゲートの自重降下指令信号が出力されて、電磁クラッチ７は解放されて、ゲートは自重降下を開始する。ゲートが自重降下すると、制限開閉器又は開度発信器３４によりゲートの開度を検出し、全閉近傍検出回路３５によりゲートがどの位置にいてゲートがどれくらい開いているのかの開度を検出する。その後、ゲートが設定された開度に到達すると、電磁クラッチ制御回路３６から電磁クラッチ７に「連結」信号が出力され、電磁クラッチ７が連結されてゲートの自重降下は停止する。そして、電動機制御回路３７から、電動機１２に駆動信号を出力して、電動機１２の駆動力によりゲートを全閉位置まで下降させる。電磁クラッチ制御回路３６から自重降下指令が出力されている状態で、全閉近傍検出回路３５により開度が任意に設定された開度に到達していないと判断された場合や、開度発信器３８からゲートの開度の変化を検出し、開度信号変化有無検出回路３９を作動させてゲートの開度に変化がないと判断されれば、電磁クラッチ制御回路３６から電磁クラッチ７に「連結」信号を出力して、電磁クラッチ７を連結すると共に、電動機制御回路３７から電動機１２に下降指令を出力して、ゲートを全閉位置まで下降させる。
【００２４】
つぎに、本発明の第二実施形態に係る水門開閉装置の操作制御システムの制御動作を図５のフローチャートにて説明する。
第一実施形態と同様にゲートが上死点まで上昇して水門が全開している状態において、遠方操作盤３１から機側操作盤３２にゲートの自重降下併用閉を指令する（ステップＳ１０）。機側操作盤３２はラック式水門開閉装置に内蔵された電磁クラッチ７に通電して（ステップＳ１１）、電磁クラッチ７の連結を解除して制御システムをスタートさせる。ステップＳ１１で電磁クラッチ７の連結が解除されると、ステップＳ１２でゲートは遠心ブレーキ９により減速されながら適切な速度で自重降下を開始する。ゲートが通常の自重降下を行うときは、ステップＳ１５で任意に設定された開度（開度３０ｃｍ）にて電磁クラッチ７の通電を解除し、電磁クラッチ７を連結する。その後、ステップＳ１６で電動閉操作に切り替わりゲートを電動機１２により低速で下降させる。ステップＳ１７で水門が全閉したことを確認して電動機１２を自動停止させて、ステップＳ１８で水門の閉操作が完了する。
また、ステップＳ１２でゲートが自重降下を開始した後、ステップＳ１３で水門に設けられた開度信号に変化がないと判断したときは、ゲートが閉操作中に何かの異常事態が発生したと判断して、ステップＳ１４で電磁クラッチ７の通電を解除して、ステップＳ１６で電動閉操作に切り替えてゲートを電動機１２により低速で下降させる。以下同様にして、ステップＳ１６でゲートが全閉したことを確認して電動機１２を自動停止させて、ステップＳ１８で水門の閉操作が完了する。
【００２５】
【発明の効果】
以上説明したように、請求項１に記載した発明によれば、水門の閉操作をするときに最初にブレーキで速度制御をしながら自重降下させ、水門が全閉する近傍でゲートの自重による降下を停止し、その後電動操作に切り替えて、ゲートの降下速度を自重降下速度よりも低速にして、ゲートを全閉まで下降させるようにしたので、急降下による着床時の衝撃がなく、水密ゴムを痛めたり、構造物に対して、ゲートの損傷、ラック棒の座屈、開閉機アンカーボルトの引き抜き、門柱の割れなどの発生の恐れがない。また、自重降下による衝撃荷重を設計上考慮する必要もなくなる。また、全閉近傍にて低速に切り替えることで、呑口断面が小さくなり水流によるフラッシング作用を利用し、扉体下部のゴミ及び堆砂を取り除くことができる。さらに、例えば水門の近くに係留された船が流水によりゲートの下に入り込んでしまう場合があるが、このときゲートを自重降下で全閉まで降下させると、保護機能がないため慣性力を持った衝撃力がゲート及び船に作用される。本発明に係る操作制御システムを採用することで、安全な範囲は、ゲートを自重降下で高速下降させ、船と干渉するおそれがある範囲は、電動操作で過負荷検出装置を保護装置として締め切り操作を行う。これによりゲート及び船の損傷を防止することが可能となる。
【００２６】
請求項２に記載した発明によれば、ゲートの自重による降下操作後、自重降下に要する時間経過時点で電動操作に切り替えてゲートを全閉まで下降させるようにしたので、ゲートが閉門途中に何かの異常事態の発生によりゲートの自重降下が妨げられて途中で停止していた場合も、一定時間経過後に電動機が作動することにより確実に水門が全閉するまでゲートの下降操作を行うことができる。
【００２７】
請求項３に記載した発明によれば、ゲートの自重による降下中に、開度信号が変化しない場合、自重で降下するゲートが途中で停止していると判断して、電動操作に切替えてゲートを全閉まで下降させるようにしたので、水門が閉門途中に何かの異常事態の発生により扉体の自重降下が妨げられて途中で停止していた場合も、ゲートの自重降下中に開度信号の変化を検出し、変化がない場合はゲートが途中で停止していると判断して自動的に電動操作に切替えて確実に水門が全閉するまでゲートの下降操作を行うことができる。
【００２８】
請求項４に記載した発明によれば、複数の水門を遠隔集中制御できるようにしたので、複数の水門の遠隔制御を行う場合、一人の操作員により複数の水門の閉操作を短時間に制御することができる。
【００２９】
請求項５に記載した発明によれば、請求項１〜４のいずれかの操作制御システムに使用する水門開閉措置は、ラック式水門開閉装置であって、該ラック式水門開閉装置は、電気信号により断接操作してラック棒を連結したゲートを自重降下させる電磁クラッチを備えるようにしたので、噛合い効率が良く比較的小さな自重でも、自重降下を行うことができる。また、高効率であることから、自重降下速度を速くすることが可能である。
【図面の簡単な説明】
【図１】本発明の実施の形態に係るラック式水門開閉装置を示す図である。
【図２】本発明の第一実施形態の水門開閉装置の操作制御システムを示す概略図である。
【図３】本発明の第一実施形態の水門開閉装置の操作制御システムのフローチャートである。
【図４】本発明の第二実施形態の水門開閉装置の操作制御システムを示す概略図である。
【図５】本発明の第二実施形態の水門開閉装置の操作制御システムのフローチャートである。
【符号の説明】
１ラック棒
７電磁クラッチ
９遠心ブレーキ
１２電動機
２１，３１遠方操作盤
２２，３２機側操作盤
２３，３３水門開閉装置[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control system of a water gate opening / closing device provided with a dead weight type gate, and more particularly to an operation control system of a water gate opening / closing device that performs opening, closing, and stopping operations of a water gate using an electric motor in an auxiliary manner. Things.
[0002]
[Prior art]
In general, a water gate opening / closing device can open, close, and stop the water gate with a motor by a push button operation of a machine side operation panel. The closing operation of the water gate by the dead weight type gate can be performed by manually operating a lever incorporated in the water gate opening / closing device. In the case where the operation of opening, closing, and stopping the water gate is performed by a motor from a distance, the motor can be operated by a push button operation. When the closing operation of the sluice gate by the dead weight type gate is performed by an operation from a distance, it can be performed by opening the electromagnetic clutch built in the sluice gate opening / closing device by a push button operation.
[0003]
As a conventional emergency shut-down system for a self-weight dropping gate, for example, in Patent Document 1, when a water gate is not fully closed due to self-weight drop of a door body within a time set in advance in a timer circuit, an “input signal” is sent from a controller. '' To connect the electromagnetic clutch to keep the opening / closing operation mechanism and the door lifting / lowering mechanism in an interlocked state, and then output a start signal from the controller to the motor of the opening / closing operation mechanism, and set the motor to the door body. It is disclosed that the water gate is fully closed by starting in the closing direction and forcibly lowering the door body to the bottom dead center.
[0004]
[Patent Document 1]
JP 2001-234525 A
[Problems to be solved by the invention]
[0006]
When the operation of closing the water gate is performed by operating the electric motor from a distance, the opening and closing speed of the gate is 0.3 m / min, so that when the head is high, a long time is required for the closing operation. For example, when the head is 3 m, The required time is 10 minutes. In addition, when remotely controlling a plurality of gates from a distance, it is often the case that one gate does not shift to the next gate operation until the one gate stops after starting operation. As the length increases, the number of sluice gates controlled by one person is limited.
As a means of shortening the operation time of closing the gate, there is also a method of providing a speed conversion function by a pole change motor to increase the speed only when closing the gate, but increasing the descent speed of the gate only about 2 to 4 times. I can't. As another means, there is a method of performing speed conversion using an inverter motor.However, there are problems such as bearings for high rotation of the motor, and problems such as a need to increase the starting torque of the inverter. The cost is high.
[0007]
In the case where the closing operation of the water gate is performed only by the self-weight drop of the gate, the electromagnetic clutch is released by the electric signal by the push button operation and the gate is self-weighted down to the fully closed state, but the descent speed is 6 m / min or less. Therefore, there is a risk of damaging the watertight rubber due to the impact at the time of landing on the gate, damaging the gate, buckling the rack bar, pulling out the anchor bolt of the opening / closing device, cracking the gate post, etc. with respect to the structure. In addition, since there is a possibility that a load acts locally when there is wood, stones, and accumulation, it is necessary to design the structure to have a strength against an impact load when the gate is closed. Furthermore, when there is a water level, there is a further problem that the presence or absence of foreign matter cannot be confirmed.
Further, the dead-weight type gate disclosed in Patent Literature 1 activates an electric motor to forcibly lower the door body when the door body is not fully closed in an emergency when the water level rises sharply. It does not take into account the control of the opening / closing operation of the dead weight type gate in the opening / closing operation of the vehicle.
[0008]
The present invention has been made in view of such a point, and it is possible to safely and reliably operate the opening and closing operation of a water gate opening / closing device equipped with a self-weight dropping gate at a high speed, and a plurality of water gates can be operated by one worker. An object of the present invention is to provide an operation control system of a water gate switchgear which can be remotely controlled, particularly, an operation control system of a rack type watergate switchgear.
[0009]
[Means for Solving the Problems]
As a means for solving the above-mentioned problems, the invention described in claim 1 first lowers its own weight while controlling the speed with a brake, and stops the descent due to the own weight of the gate near the fully closed gate. After that, the operation is switched to the electric operation, the descent speed of the gate is made lower than the own weight descent speed, and the gate is lowered to the fully closed state.
[0010]
With this configuration, when opening / closing the water gate opening / closing device by remote operation, by using the self-weight drop of the gate, the water gate is closed at a speed of about 7 to 20 times that of the normal operation of closing the water gate by electric operation. Since the closing operation can be performed, the time required for the closing operation of the floodgate can be significantly reduced.
[0011]
According to a second aspect of the present invention, in the first aspect of the present invention, after the descent operation by the own weight of the gate, the operation is switched to the electric operation when the time required for the descent of the gate elapses, and the gate is lowered to the fully closed state. I do.
[0012]
With this configuration, even if an abnormal situation occurs during the closing operation of the floodgate and the gate's own weight drop is hindered and stops halfway, the electric gate is automatically operated after the time required for the gate's own weight drop has elapsed. And the gate can be lowered until the gate is fully closed.
[0013]
According to a third aspect of the present invention, in the first aspect of the present invention, when the opening signal does not change during the descent of the gate due to its own weight, it is determined that the gate descending by its own weight is stopped halfway. The operation is switched to electric operation and the gate is lowered to the fully closed state.
[0014]
With this configuration, even when the gate closes due to the occurrence of an abnormal situation during the closing operation of the floodgate and the stoppage is stopped halfway, the change in the opening signal is detected during the drop of the gate's own weight, and the change is detected. When there is no gate, it is determined that the gate is stopped halfway, and the operation is automatically switched to the electric operation, and the lowering operation of the gate is performed until the water gate is completely closed.
[0015]
The invention described in claim 4 is characterized in that, in the invention described in any one of claims 1 to 3, remote control of a plurality of floodgates is performed.
[0016]
With this configuration, when performing remote control of a plurality of floodgates, the number of floodgates that can be controlled by one operator can be increased.
[0017]
According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the water gate opening / closing device is provided with an electromagnetic clutch that disconnects and connects by an electric signal to lower a gate connected to the rack bar by its own weight. It is a rack type water gate opening and closing device provided.
[0018]
With such a configuration, the rack-type water gate opening / closing device includes the electromagnetic clutch, so that the rack-type water gate opening / closing device can perform the self-weight drop even with a relatively small own weight with good meshing efficiency. In addition, because of the high efficiency, it is possible to increase the self-weight descent speed.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an operation control system of a water gate opening / closing device according to an embodiment of the present invention will be described in detail with reference to FIGS.
First, a rack type water gate opening / closing device used for an operation control system of a water gate opening / closing device according to an embodiment of the present invention will be described with reference to FIG. The rack type water gate opening / closing device includes a rack rod 1 connected to a gate (not shown), a gear train (pin gear 2, spur gears 3, 4, 5) meshed and connected to the rack rod 1, and a planet meshed and connected to the gear train. A gear 6, an electric motor 12 for inputting a driving force to the sun gear of the planetary gear 6 to move the rack bar 1 up and down through a gear train, an electromagnetic clutch 7 connected to a ring gear of the planetary gear 6, and this electromagnetic clutch 7 and a centrifugal brake 9 connected via a spur gear 8. Reference numeral 11 denotes a brake for preventing the gate from falling, reference numeral 13 denotes a brake interposed between the planetary gear 6 and the electric motor 12, and reference numeral 14 denotes a manual operation handle for manually moving the gate up and down. .
[0020]
Next, the operation of such a rack type water gate opening and closing device will be described.
When lowering the gate by its own weight, the electromagnetic clutch 7 built in the rack type water gate opening / closing device is always connected and stopped by a spring force, but the electromagnetic clutch 7 is operated by remote control to release the electromagnetic clutch 7. Then, the electromagnetic clutch 7 is released, and the gate can be lowered by its own weight. When the electromagnetic clutch 7 is released by an electric signal from the remote control panel, the gate is released from the fall prevention brake 11. Then, when a gate load acts on the rack bar 1, the gate starts to descend by its own weight. At that time, the gate is cut off from the fall prevention brake 11 and is connected to the centrifugal brake 9, so that the fall speed of the gate is controlled by the centrifugal brake 9 to a certain speed or less. Further, when the electromagnetic clutch 7 is released from the connection state with the fall prevention brake 11 by the "release" operation of the electromagnetic clutch 7 and the gate performs its own weight drop, the load at the time of the gate's own weight drop is from the rack bar 1. The power is transmitted to the gear train of the pin gear 2, the spur gear 3, the spur gear 4 and the spur gear 5, and is transmitted from the gear train to the centrifugal brake 9 via the ring gear of the planetary gear 6 and the spur gear 8. When raising the gate, the electric motor 12 is started and the rack bar 1 is raised via the planetary gear 6 and the gear train to raise the gate. Also, the gate can be raised by directly raising the rack bar 1 with the manual operation handle 14.
[0021]
Next, an operation control system of the water gate opening / closing device according to the first embodiment of the present invention will be described with reference to FIGS.
Although the sluice gate opening / closing device according to the embodiment of the present invention basically uses the rack type sluice gate opening / closing device shown in FIG. 1, FIG. 2 shows only the main configuration.
The sluice gate opening / closing device 23 includes an electromagnetic clutch 7 for lowering its own weight, a motor 12 for vertically moving a gate (not shown), and a limit switch or opening transmitter 24 for transmitting a signal indicating the opening of the gate. Further, the machine-side operation panel 22 is installed near the gate, and detects that the gate is near the fully-closed state based on the output signal of the limit switch or the opening degree transmitter 24 to detect the fully-closed state. A circuit 25, an electromagnetic clutch control circuit 26 for transmitting an operation signal of "engagement" or "release" of the electromagnetic clutch 7, an electric motor control circuit 27 for transmitting a drive signal of the electric motor 12, An elapsed time counting circuit 28 for counting time is provided. This machine-side operation panel 22 is connected to the remote operation panel 21 that outputs a remote operation signal from a distance. When performing the self-weight lowering operation of the gate, first, the remote operation panel 21 outputs a gate automatic lowering command signal. When the gate's own weight lowering command signal is input to the electromagnetic clutch control circuit 26 of the machine side operation panel 22, a “release” signal is sent from the electronic clutch control circuit 26 to the electromagnetic clutch 7 of the water gate opening / closing device 23, that is, the gate's own weight. The descending command signal is output, the electromagnetic clutch 7 is released, and the gate starts to descend by its own weight. When the gate falls under its own weight, the opening of the gate is detected by the limit switch or the opening transmitter 24, and the position of the gate and how much the gate is open is detected by the fully closed vicinity detection circuit 25. . Thereafter, when the gate reaches the set opening degree, the "engagement" signal is output from the electromagnetic clutch control circuit 26 to the electromagnetic clutch 7, and the electromagnetic clutch 7 is engaged to stop the self-weight drop of the gate. Then, a drive signal is output from the motor control circuit 27 to the motor 12, and the gate is lowered to the fully closed position by the driving force of the motor 12. In a state where the weight drop command is output from the electromagnetic clutch control circuit 26, the opening degree is set arbitrarily by the fully closed vicinity detection circuit 25 after a certain time has passed by the elapsed time counting circuit 28 of the weight drop command. , The electromagnetic clutch control circuit 26 outputs a “connect” signal to the electromagnetic clutch 7, connects the electromagnetic clutch 7, and outputs a descent command from the electric motor control circuit 27 to the electric motor 12. Then, the gate is lowered to the fully closed position.
[0022]
Next, a control operation of the operation control system of the water gate closing device according to the first embodiment of the present invention will be described with reference to a flowchart of FIG.
Now, in a state where the gate has risen to the top dead center and the water gate is fully opened, the remote control panel 21 instructs the machine-side control panel 22 to close the gate together with its own weight (step S1). The machine-side operation panel 22 energizes the electromagnetic clutch 7 built in the rack-type water gate opening / closing device 23 (step S2), disconnects the electromagnetic clutch 7, and starts the control system. When the connection of the electromagnetic clutch 7 is released in step S2, the gate starts lowering its own weight at an appropriate speed while being decelerated by the centrifugal brake 9 in step S3. When the gate performs normal weight drop, the electromagnetic clutch 7 is de-energized at the opening (arbitrary opening 30 cm) arbitrarily set in step S5, and the electromagnetic clutch 7 is connected. Thereafter, in step S6, the operation is switched to the electric closing operation, and the gate is lowered by the electric motor 12 at a low speed. In step S7, it is confirmed that the water gate is completely closed, and the electric motor 12 is automatically stopped. In step S8, the operation of closing the water gate is completed.
Further, if the opening does not reach the arbitrarily set opening within the set time after the gate starts its own weight descent in step S3, it is determined that some abnormal situation has occurred during the closing operation of the gate, In step S4, the energization of the electromagnetic clutch 7 is released, and in step S6, the operation is switched to the electric closing operation, and the gate is lowered by the electric motor 12 at a low speed. Similarly, in the same manner, in step S7, it is confirmed that the gate is completely closed, the electric motor 12 is automatically stopped, and the closing operation of the water gate is completed in step S8.
[0023]
Next, an operation control system of a water gate opening / closing device according to a second embodiment of the present invention will be described with reference to FIGS.
The sluice gate opening and closing apparatus according to the embodiment of the present invention basically uses the rack type sluice gate opening and closing apparatus shown in FIG. 1, but FIG. 4 shows only the main configuration.
The sluice gate opening / closing device 33 includes an electromagnetic clutch 7 for lowering its own weight, a motor 12 for vertically moving a gate (not shown), a limit switch or opening transmitter 34 for transmitting a signal indicating the opening of the gate, and an opening of the gate. An opening transmitter 38 for transmitting a signal indicating a degree change is provided. Further, the machine-side operation panel 32 is installed in the machine-side operation room provided near the gate, and detects that the gate is located in the vicinity of the fully-closed state by an output signal of the limit switch or the opening degree transmitter 34. A fully-closed proximity detection circuit 35 for detecting an operation of the electromagnetic clutch 7 based on an operation signal of “engagement” or “release” of the electromagnetic clutch 7, an electric motor control circuit 37 for transmitting a drive signal of the electric motor 12, An opening signal change presence / absence detecting circuit 39 is provided for detecting a change in the opening of the gate after a command to lower the weight of the gate. The machine side operation panel 32 is connected to the remote operation panel 31 that outputs a remote operation signal from a remote place. Then, when performing the self-weight lowering operation of the gate, first, the remote control panel 31 outputs a self-weight lowering command signal of the gate. When the gate's own weight lowering command signal is input to the electromagnetic clutch control circuit 36 of the machine side operation panel 32, the electromagnetic clutch control circuit 36 sends a “release” signal to the electromagnetic clutch 7 of the water gate opening / closing device 33, that is, the gate's own weight. The descending command signal is output, the electromagnetic clutch 7 is released, and the gate starts to descend by its own weight. When the gate falls by its own weight, the opening degree of the gate is detected by the limit switch or the opening degree transmitter 34, and the opening degree of the position of the gate and how much the gate is open is detected by the fully closed vicinity detecting circuit 35. . Thereafter, when the gate reaches the set opening degree, the “engagement” signal is output from the electromagnetic clutch control circuit 36 to the electromagnetic clutch 7, the electromagnetic clutch 7 is engaged, and the self-weight drop of the gate stops. Then, a drive signal is output from the motor control circuit 37 to the motor 12, and the gate is lowered to the fully closed position by the driving force of the motor 12. In the state where the self-weight drop command is output from the electromagnetic clutch control circuit 36, the fully-closed vicinity detection circuit 35 determines that the opening has not reached the arbitrarily set opening, or an opening transmitter. 38, the change of the gate opening is detected, and the opening signal change presence / absence detection circuit 39 is operated to determine that there is no change in the gate opening. And outputs the lowering command from the motor control circuit 37 to the motor 12 to lower the gate to the fully closed position.
[0024]
Next, the control operation of the operation control system for the water gate opening / closing device according to the second embodiment of the present invention will be described with reference to the flowchart of FIG.
As in the first embodiment, in a state where the gate has risen to the top dead center and the water gate is fully open, the remote control panel 31 instructs the machine-side control panel 32 to close the gate together with its own weight (step S10). The machine side operation panel 32 energizes the electromagnetic clutch 7 built in the rack type water gate opening / closing device (step S11), releases the connection of the electromagnetic clutch 7, and starts the control system. When the connection of the electromagnetic clutch 7 is released in step S11, the gate starts to descend at its proper speed while being decelerated by the centrifugal brake 9 in step S12. When the gate performs a normal self-weight drop, the electromagnetic clutch 7 is de-energized at the arbitrarily set opening (opening 30 cm) in step S15, and the electromagnetic clutch 7 is connected. Thereafter, in step S16, the operation is switched to the electric closing operation, and the gate is lowered by the electric motor 12 at a low speed. In step S17, it is confirmed that the water gate is completely closed, and the motor 12 is automatically stopped. In step S18, the operation of closing the water gate is completed.
Further, after the gate starts its own weight descent in step S12, when it is determined in step S13 that there is no change in the opening signal provided in the water gate, it is determined that some abnormal situation has occurred during the closing operation of the gate. In step S14, the energization of the electromagnetic clutch 7 is released, and in step S16, the operation is switched to the electric closing operation, and the gate is lowered by the electric motor 12 at a low speed. Similarly, in step S16, it is confirmed that the gate is completely closed, and the motor 12 is automatically stopped. In step S18, the operation of closing the water gate is completed.
[0025]
【The invention's effect】
As described above, according to the first aspect of the present invention, when closing the water gate, first, the weight is lowered while the speed is controlled by the brake, and the descent due to the weight of the gate near the gate is fully closed. Was stopped, and then switched to electric operation, the descent speed of the gate was made lower than its own weight descent speed, and the gate was lowered until it was fully closed. There is no risk of damage to the structure, damage to the gate, buckling of the rack bar, pulling out the switch anchor bolt, cracking of the gate post, etc. Further, it is not necessary to consider the impact load due to the own weight drop in the design. Further, by switching to a low speed in the vicinity of the fully closed state, the cross section of the drinking mouth becomes small, and the flushing action by the water flow can be used to remove dust and sediment below the door. In addition, for example, a ship moored near a floodgate may enter under the gate due to running water.In this case, if the gate is lowered to its fully closed position by its own weight, it has inertia because there is no protection function Impact forces are applied to the gate and the ship. By adopting the operation control system according to the present invention, the safe range is that the gate is lowered at high speed by its own weight, and the range where there is a possibility of interference with the ship is the electric operation, the overload detection device is the deadline operation as a protection device. I do. This makes it possible to prevent the gate and the ship from being damaged.
[0026]
According to the invention described in claim 2, after the descent operation of the gate due to its own weight, the operation is switched to the electric operation at the elapse of the time required for the descent of the weight and the gate is lowered to the fully closed state. In the event that the self-weight drop of the gate is hindered due to the occurrence of such an abnormal situation, the motor will operate after a certain period of time, and the gate will be lowered until the water gate is completely closed. it can.
[0027]
According to the third aspect of the present invention, when the opening signal does not change during the descent of the gate due to its own weight, it is determined that the gate descending by its own weight is stopped halfway, and the operation is switched to the electric operation to switch the gate. Is lowered to the fully closed position. When a change in the signal is detected, if there is no change, it is determined that the gate is stopped halfway, and the operation is automatically switched to the electric operation, and the lowering operation of the gate can be performed until the water gate is completely closed.
[0028]
According to the invention described in claim 4, since the plurality of locks can be remotely controlled centrally, when remote control of the plurality of locks is performed, the closing operation of the plurality of locks is controlled by a single operator in a short time. can do.
[0029]
According to the invention described in claim 5, the water gate opening / closing means used in the operation control system according to any one of claims 1 to 4 is a rack type water gate opening / closing device, wherein the rack type water gate opening / closing device is an electric signal. Since the electromagnetic clutch for lowering the weight of the gate connected to the rack bar by the disconnection operation is provided, the self-weight drop can be performed even with a relatively small own weight with good meshing efficiency. In addition, because of the high efficiency, it is possible to increase the self-weight descent speed.
[Brief description of the drawings]
FIG. 1 is a diagram showing a rack type water gate opening / closing device according to an embodiment of the present invention.
FIG. 2 is a schematic view showing an operation control system of the water gate opening / closing device according to the first embodiment of the present invention.
FIG. 3 is a flowchart of an operation control system of the water gate opening / closing device according to the first embodiment of the present invention.
FIG. 4 is a schematic diagram showing an operation control system of a water gate opening / closing device according to a second embodiment of the present invention.
FIG. 5 is a flowchart of an operation control system of a water gate opening / closing device according to a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rack bar 7 Electromagnetic clutch 9 Centrifugal brake 12 Motor 21, 31 Remote control panel 22, 32 Machine control panel 23, 33 Water gate opening / closing device

Claims

First, lower the weight by the weight while controlling the speed with the brake, stop the descent due to the weight of the gate in the vicinity where the floodgate is fully closed, then switch to electric operation, make the descent speed of the gate lower than the weight descent speed, An operation control system for a water gate opening / closing device, wherein the gate is lowered to a fully closed position.

2. The operation control system according to claim 1, wherein after the descent operation of the gate due to its own weight, the operation is switched to the electric operation and the gate is lowered to the fully closed state when a time required for the descent of the gate elapses.

When the opening signal does not change during the descent of the gate due to its own weight, it is determined that the gate descending by its own weight is stopped halfway, and the operation is switched to electric operation and the gate is lowered to the fully closed state. The operation control system according to claim 1.

The operation control system according to any one of claims 1 to 3, wherein a plurality of floodgates are remotely centrally controlled.

The said water gate switch is a rack type water gate opening / closing apparatus provided with the electromagnetic clutch which carries out connection / disconnection operation by an electric signal and lowers the gate connected with the rack bar by its own weight. Operation control system described