JP3727870B2

JP3727870B2 - Self-propelled soil improvement machine, soil improvement material storage device used therefor, and soil improvement material supply method

Info

Publication number: JP3727870B2
Application number: JP2001225463A
Authority: JP
Inventors: 泰典太田; 信也奥村; 吉弘星野; 久儀橋本
Original assignee: Hitachi Construction Machinery Co Ltd
Current assignee: Hitachi Construction Machinery Co Ltd
Priority date: 2001-07-26
Filing date: 2001-07-26
Publication date: 2005-12-21
Anticipated expiration: 2021-07-26
Also published as: JP2003034950A

Description

【０００１】
【発明の属する技術分野】
本発明は、受け入れた土砂を土質改良材と混合して改良する自走式土質改良機に関し、特に土砂に添加する土質改良材を充填する際の土質改良材の飛散を防止することができる自走式土質改良機、これに用いる土質改良材貯留装置及び土質改良材供給方法に関するものである。
【０００２】
【従来の技術】
近年、建設省によるいわゆる建設リサイクル推進計画の策定（１９９７年）といった廃棄物再利用促進の背景の下、例えば、ガス管等の埋設工事、上下水道工事、及びその他の道路工事・基礎工事等において発生する建設発生土砂を土質改良材とともに混合処理し、リサイクル用の改良土とする自走式土質改良機のニーズが拡がりつつある。
【０００３】
このような自走式土質改良機としては、例えば特許第２８６７２３５号公報に記載のもの等が既に提唱されている。この従来技術は、ホッパで受け入れた土砂を搬送しつつ、この搬送中の土砂に土質改良材貯留装置により土質改良材を添加して混合装置に導入し、ここで土砂及び土質改良材を回転打撃子により解砕・混合して生成した改良土を排出コンベアにより機外に搬出するようになっている。
なお、上記土質改良材貯留装置には、その上部に設けた土質改良材の受入口に先端の尖ったカッタが設けられており、搭載したクレーンにより、土質改良材の入った袋を挿入し、カッタにより袋の下部に切り込みを入れ、そこから土質改良材貯留装置へ土質改良材を充填するようになっている。
【０００４】
【発明が解決しようとする課題】
通常、自走式土質改良機は、その輸送性あるいは機動性を活かして改質対象となる土砂の発生現場に直接搬入されることが多く、また、上述のニーズ拡大に伴いその活躍の場も拡がってきており、都市部やその周辺の稼動現場に持ち込まれるケースも増えてきている。
【０００５】
上記従来技術における土質改良材貯留装置への土質改良材の充填作業は上述の通りであるが、土質改良材貯留装置は、上記した受入口以外はほぼ密閉されており、袋から土質改良材貯留装置に土質改良材を充填する際、充填される土質改良材の体積に相当する分の内部雰囲気が受入口から流出することになる。このとき、土質改良に用いる土質改良材は、一般的に、例えば石灰やセメント等といった非常に粒度の小さい粉粒体であるため、上記充填の際、土質改良材貯留装置内で舞い上がってしまい、上記のように外部に流出する雰囲気とともに、袋と上記受入口との間の隙間から流出してしまう場合がある。通常、自走式土質改良機の稼動現場は屋外であるため、この流出した土質改良材が風等により飛散し、周囲環境や人体の汚染の原因となる可能性がある。
【０００６】
本発明は、上記の事柄に基づいてなされたものであり、その目的は、土砂に添加する土質改良材を充填する際の土質改良材の飛散を防止することができる自走式土質改良機、これに用いる土質改良材貯留装置及び土質改良材供給方法を提供することにある。
【０００７】
【課題を解決するための手段】
（１）上記目的を達成するために、本発明は、受け入れた土砂を土質改良材と混合して改質する自走式土質改良機において、前記土質改良材を貯留する土質改良材貯留装置と、この土質改良材貯留装置に設けられ、前記土質改良材貯留装置内の雰囲気を外部に逃がす通気口と、この通気口に設けたフィルタとを備え、土質改良材の外部への流出を防止するとともに、前記土質改良材貯留装置内部の雰囲気を外部へ逃がす構成とする。
【０００８】
本発明の自走式土質改良機においては、その土質改良材貯留装置に内部雰囲気を外部に逃がす通気口を設けている。すなわち、この土質改良材貯留装置への土質改良材の充填の際、外部に逃げようとする内部雰囲気の大部分をこの通気口から逃がすことにより、土質改良材の受入口からの内部雰囲気の流出量を低減することができる。また、通気口にフィルタを設けたことにより、この通気口から雰囲気とともに土質改良材が外部に流出することを防止することができる。従って、土砂に添加する土質改良材を充填する際の土質改良材の飛散を防止することができる。
【００１１】
（２）上記目的を達成するために、また本発明は、土砂に添加する土質改良材を貯留する土質改良材貯留装置において、内部の雰囲気を外部に逃がす通気口と、この通気口に設けたフィルタとを備え、土質改良材の外部への流出を防止するとともに、前記土質改良材貯留装置内部の雰囲気を外部へ逃がす構成とする。
【００１４】
（３）また、上記目的を達成するために、本発明の土質改良材供給方法は、自走式土質改良機の土質改良材貯留装置に内部の雰囲気を外部に逃がす通気口を設け、土質改良材を収容した容器と前記土質改良材貯留装置上部に設けた土質改良材受入口との間をカバーで覆い、この状態で前記容器から前記土質改良材貯留装置に土質改良材を充填し、前記通気口に設けたフィルタにより土質改良材の外部への流出を防止しつつ、前記通気口から前記土質改良材貯留装置内部の雰囲気を外部へ逃がす。
【００１５】
本発明の土質改良材供給方法においては、フィルタにより通気口からの土質改良材の流出を防止しつつ通気口から土質改良材貯留装置内部の雰囲気を外部へ逃がす構成とした上で土質改良材を収容した容器と土質改良材貯留装置の土質改良材受入口との間をカバーで覆った状態で土質改良材貯留装置への土質改良材の充填を行うので、充填の際の土質改良材の飛散をより確実に防止することができる。
【００１６】
（４）上記目的を達成するために、また本発明の土質改良材供給方法は、自走式土質改良機の土質改良材貯留装置に内部の雰囲気を外部に逃がす通気口を設け、土質改良材を収容した容器と前記土質改良材貯留装置上部に設けた土質改良材受入口との間に、この土質改良材受入口に向かう略円筒状の空気流を生じさせ、前記容器から前記略円筒状の空気流の内側を通過させるようにして、前記土質改良材貯留装置に土質改良材を充填し、前記通気口に設けたフィルタにより土質改良材の外部への流出を防止しつつ、前記通気口から前記土質改良材貯留装置内部の雰囲気を外部へ逃がす。
【００１７】
本発明の土質改良材供給方法においては、フィルタにより通気口からの土質改良材の流出を防止しつつ通気口から土質改良材貯留装置内部の雰囲気を外部へ逃がす構成とした上で土質改良材を収容した容器と土質改良材貯留装置の土質改良材受入口との間を容器から土質改良材受入口に向かう略円筒状の空気流の幕により覆う。これにより、容器と土質改良材受入口との間に、見かけ上隙間が生じていても、充填される土質改良材や土質改良材貯留装置から流出しようとする土質改良材は、土質改良材受入口に向かって流れてくる空気流の幕により土質改良材貯留装置内に導入される。従って、土質改良材の周囲への飛散をより確実に防止することができる。
【００１８】
【発明の実施の形態】
以下、本発明の自走式土質改良機の一実施の形態を図面を用いて説明する。
図１は本発明の自走式土質改良機の一実施の形態の全体構造を表す側面図である。
この図１において、１は走行体で、この走行体１は、トラックフレーム２と、このトラックフレーム２の両端に設けた従動輪３及び駆動輪４と、この駆動輪４に直結した駆動装置５と、従動輪３及び駆動輪４に掛け回した履帯６とで構成されている。７は本実施の形態の自走式土質改良機の本体フレームで、この本体フレーム７は、角パイプ等の鋼材で適宜構成されたもので、先のトラックフレーム２の上部に略水平に配設されている。
８は投入される土砂を粒度に応じて選別する篩装置で、この篩装置８は内部に装着した所定の目の大きさの格子９を備え、本体フレーム７長手方向一方側（図１中左側）上部にばね１０を介して振動可能に支持されており、格子９の目の大きさよりも大きなものを除去し、小さなものを下方へ導くようになっている。１１はこの篩装置８への土砂投入性への配慮として篩装置８上方に設けたいわゆる煽りである。１２は篩装置８で選別された土砂を受け入れるホッパで、このホッパ１２は、上方拡開の枠状に形成されており、篩装置８の下方に位置するように本体フレーム７長手方向一方側（図１中左側）に支持されている。１３はこのホッパ１２内の土砂を搬送する搬送コンベアで、この搬送コンベア１３は、ホッパ１２の下方から搬送方向（図１中右方向）に向かって上り傾斜となるように、本体フレーム７に支持されている。
【００１９】
１４は土質改良に用いる土質改良材を貯留する土質改良材貯留装置で、この土質改良材貯留装置１４は、土質改良材を内部に貯留する貯留部１５と、先の搬送コンベア１３上の土砂に土質改良材を添加する供給部１６とで構成されており、貯留部１５が本体フレーム７の長手方向（図１中左右方向）中央付近に立設した複数（例えば３本）の支柱１７に支持されて設けられている（土質改良材貯留装置１４の詳細は後述）。
１８は改良土を生成する混合装置で、繁雑防止のため特に図示しないが、この混合装置１８は、内部に略平行な複数のパドル型のミキサ（図示せず）を備えており、このパドルミキサにより搬送コンベア１３から導入された土砂及び土質改良材を混合して改良土を生成するようになっている。また、この混合装置１８は、本体フレーム７の長手方向（図１中左右方向）中央付近に略水平に設けられており、その一方側（図１中左側）上部に土砂及び土質改良材の入口１９を、他方側（図１中右側）下部に改良土の出口２０を備えている。２１は上記パドルミキサを駆動する駆動装置である。
【００２０】
２２はこの混合装置１８で生成した改良土を機外に排出する排出コンベアで、この排出コンベア２２は、支持部材２３等により本体フレーム７から吊り下げ支持され、混合装置１８の出口２０の下方から搬送方向（図１中右方向）に向かって上り傾斜となっている。
２４は本実施の形態の自走式土質改良機の駆動源を備えた動力装置で、この動力装置２４は、本体フレーム７の長手方向他方側（図１中右側）端部に支持部材２５を介して支持されている。また、繁雑防止のため特に図示しないが、この動力装置２４は、エンジンと、このエンジンにより駆動される少なくとも１つの油圧ポンプと、この油圧ポンプから各駆動装置に供給される圧油を制御する複数のコントロールバルブとを内蔵している。
【００２１】
ここで、前述の土質改良材貯留装置１４の詳細構造を以下に説明する。
図２はこの土質改良材貯留装置１４の詳細構造を表す側面図で、この図２中左側は内部構造を表す透視図となっている。
この図２に示すように、前述の貯留部１５は、全体がほぼ円筒形の箱状に形成されており、厳密には、上記支柱１７は、台板２６を介して貯留部１５を支持している。また、この貯留部１５は、有底筒形の下部タンク部２７と、その上部に連接した蛇腹状の上部タンク部２８と、そのさらに上部に蓋をするように設けた天板部２９とで構成されている。
【００２２】
図３は図２中矢印III方向から見た土質改良材貯留装置１４の上面図、図４は図２中IV−IV断面による水平断面図である。
これら図３、図４及び先の図２を参照して、３０は上記天板部２９の中央に設けたリング状の土質改良材充填用の受入口、３１はこの土質改良材受入口３０を開閉する蓋で、この蓋３１は、天板部２９に蝶番３２により取付けられ、開放時には、例えば天板部２９上のこの蝶番３２付近に設けたストッパ（図示せず）により、土質改良材受入口３０への土質改良材の受入れをガイドするような上方拡開となる所定角度で保持されるようになっている。３３は蓋３１の開閉の利便性を考慮して設けた把手である。
また、３４は天板部２９の下部に設けた格子部材で、この格子部材３４は、上記土質改良材受入口３０の下方に位置するようにチェーン３５を介して吊り下げられている。３６はこの格子部材３４上に設けたカッタで、このカッタ３６は、それぞれピン３７を介して格子部材３６上に図２中矢印で示したように回動可能に複数（この例では４つ）設けられており、通常は、図２中実線及び破線で図示した状態のように、互いにその先端を接触（あるいは近接）させ一体となって上方縮径の形状を成し、自走式土質改良機の輸送時等には、図２中２点鎖線で示したように、それぞれ水平方向に倒れるようになっている。
【００２３】
３８は天板部２９の外周部に複数（この例では３つ）設けた取付部、３９は各取付部３８に固定的に垂設した支持ポストで、この支持ポスト３９は、前述の台板２６に貫通して設けたガイド筒４０に挿入されている。また、４１は支持ポスト３９に所定のピッチで設けたピン穴、４２はこのピン穴４１にガイド筒４０を介して挿入するストッパピンである。
つまり、蛇腹状に形成された前述の上部タンク部２８を伸縮させることにより、支持ポスト３９がガイド筒４０にガイドされて上下方向にスライドするようになっている。これにより、貯留部１５の内部容積が変更され、その状態で上記支持ポスト３９に設けた所定のピン穴４１にガイド筒４０越しにストッパピン４２を挿入することにより、貯留部１５の内部容積を所望の値とすることができるようになっている。
このとき、自走式土質改良機をトレーラ等で輸送するときには、図５に示すように、前述のようにカッタ３６を水平方向に倒し、上部タンク部２８を限縮させて保持することにより、貯留部１５の高さ寸法を低減させ、自走式土質改良機の全高を輸送制限をクリアする高さまで低くできるようになっている。
【００２４】
この図５又は先の図２において、４３は前述の下部タンク部２７内に設けたホッパ内攪拌手段で、このホッパ内攪拌手段４３は、繁雑防止のため詳細な図示はしないが、下部タンク部２７の底部ほぼ中央を貫通して下方に伸びる回転軸に、下部タンク部２７の底部に近接するよう略水平に複数（例えば４本）の攪拌翼４４を放射状に取付けている。そして、この攪拌翼４４を回転させることにより、下部タンク部２７底部付近の土質改良材の大部分を下部タンク部２７の外周側へ移動させるようになっている。４５はこのホッパ内攪拌手段４３の駆動装置である。
また、特に図示しないが、下部タンク部２７底部の外周側の所定の位置には、前述の供給部１６に連接する土質改良材の導出口が設けられており、下部タンク部２７内の土質改良材は、上記の要領でホッパ内攪拌手段４３により順次供給部１６に導出されるようになっている。
なお、この供給部１６は、公知のいわゆるロータリフィーダで構成され、内部に備えたロータ４６の回転速度にほぼ比例した所定量の土質改良材を順次その下方の上記搬送コンベア１３上の土砂に添加するようになっている。４７は先のロータ４６の駆動装置で、特に図示しないが、この駆動装置４７は、チェーン等によりロータ４６の回転軸と連結している。
【００２５】
図２乃至図５において、４８，４９はそれぞれ本発明の最も大きな特徴である通気口（図３参照）及びこの通気管路４８に設けたフィルタで、通気口４８は、前述の天板部２９に複数（この例では４つとしたが、少なくとも１つあれば良い）設けられており、フィルタ４９は、これら複数の通気口４８に対し、貯留部１５内に位置するようにそれぞれ天板部２９下部に設けられている。但し、フィルタ４９は、必ずしも貯留部１５内に設ける必要はなく、例えば外側に設けても通気口４８に嵌まり込むように設けても良い。
５０は通気口４８に接続するように天板部２９とフランジ連結した継ぎ手、５１は一端がこの継ぎ手５０にフランジ接続したフレキシブルホースで、このフレキシブルホース５１の他端は、吸引装置５２（図１参照）に接続されている。つまり、本実施の形態においては、この吸引装置５２により通気口４８を介して貯留部１５内の雰囲気を吸引するようになっている。
【００２６】
なお、貯留部１５に土質改良材を充填するときには、予め容器に収容された土質改良材を貯留部１５に移し変えるようになっている。
図６は土質改良に用いる土質改良材を予め収容した容器の一例を表す図である。
この図６において、５３はその土質改良材の容器としてのフレキシブルコンテナで、このフレキシブルコンテナ５３は、土質改良材を収容した例えば麻袋等の袋体５４と、この袋体５４の側部と底部との補強を兼ねる吊手５５とで構成されている。
【００２７】
図７（ａ）及び図７（ｂ）は土質改良に用いる土質改良材を予め収容した容器の他の例を表す図である。
これら図７（ａ）及び図７（ｂ）に示すように、この例のフレキシブルコンテナ５３’も、図６のものと同様、袋体５４’と吊手５５とで構成されており、図６のものと異なる点は、袋体５４’の下部に排出口５６を予め設けている点である。詳細には、袋体５４’の下部には、部分的に切り込みが入れてあり、この切り込みにより排出口５６を保持あるいは開放する蓋５７が複数枚（この例では４枚）形成されている。この蓋５７は、通常、図７（ａ）に示すようにロープ５８で互いに連結され土質改良材の排出口５６を折り畳んだ状態で袋体５４’内に保持しており、このロープ５８を抜き取ると、図７（ｂ）に示すように、互いの連結が解かれ保持していた円筒状の排出口５６が袋体５４’外に開放され、土質改良材が外部に導出されるようになっている。なお、５９は土質改良材の導出量を調整するために排出口５６を絞るロープである。
【００２８】
図６のフレキシブルコンテナ５３内の土質改良材を土質改良材貯留装置１４の貯留部１５に移し変える場合、図８に示すように、まず前述の蓋３１を開けて土質改良材受入口３０を開放し、吊手５５を利用してこのフレキシブルコンテナ５３を、例えばクレーン（図示せず）等で吊り上げ土質改良材受入口３０に挿入する（図８中２点鎖線の状態）。このとき、フレキシブルコンテナ５３は、自重により前述のカッタ３６に押し付けられ、その下部に切り込みが入り、その後少しフレキシブルコンテナ５３を持ち上げる（図８中実線の状態）ことにより、その切り込みが排出口５６として開放され、内部の土質改良材が土質改良材貯留装置１４内に導入されるようになっている。
なお、上記のフレキシブルコンテナ５３’内の土質改良材を土質改良材貯留装置１４に移し変える場合は、同様にクレーン等を用いて図７（ａ）に示した状態でフレキシブルコンテナ５３’を土質改良材受入口３０位置に設置し、そこで図７（ｂ）の状態とすることにより上記の排出口５６を介して土質改良材貯留装置１４内に土質改良材を導入するようになっている。
なお、これらフレキシブルコンテナ５３，５３’は、特許請求の範囲に記載の土質改良材を収容した容器に相当する。
【００２９】
次に、以上で構成を説明してきた本実施の形態の自走式土質改良機の動作及び作用を説明する。
例えば油圧ショベル等により篩装置８に改質対象となる土砂を投入すると、この篩装置８の格子９を通過した土砂が下方のホッパ１２へと導入され、搬送コンベア１３により搬送される。そして、この搬送コンベア１３により搬送される土砂は、搬送中に土質改良材貯留装置１４から添加された土質改良材とともに混合装置１８に導入され、ここでパドルミキサにより均一に攪拌混合された後、排出コンベア２２によって搬送され機外に排出される。
【００３０】
ここで、土質改良材貯留装置１４への土質改良材の充填作業は先に図８を用いて説明したが、この図８からも分かるように、仮に通気口４８を設けない場合、土質改良材貯留装置１４は（厳密にはその貯留部１５）は、上部の土質改良材受入口３０以外ほぼ密閉された状態となっており、この充填の際、導入される土質改良材の体積に相当する分の内部雰囲気が土質改良材受入口３０から流出することになる。このとき、土質改良に用いる土質改良材は、一般的に、例えば石灰やセメント等といった非常に粒度の小さい粉粒体であるため、上記充填の際、土質改良材貯留装置１４内で舞い上がってしまい、土質改良材受入口３０から流出する雰囲気とともに、フレキシブルコンテナ５３と土質改良材受入口３０との間の隙間から流出してしまう場合がある。通常、自走式土質改良機の稼動現場は屋外であるため、この流出した土質改良材が風等により飛散し、周囲環境や人体の汚染の原因となる可能性がある。
【００３１】
それに対し、本実施の形態の自走式土質改良機においては、前述したように、土質改良材貯留装置１４の内部雰囲気を通気口４８を介して吸引装置５２により積極的に吸引するようになっている。すなわち、土質改良材充填の際、導入された土質改良材に押しのけられて土質改良材貯留装置１４外に逃げようとする内部雰囲気の大部分をこの通気口４８を介して吸引することにより、土質改良材受入口３０からの内部雰囲気の流出量を低減することができ、土質改良材充填の際の土質改良材外部への飛散を防止することができる。また、通気口４８にフィルタ４９を設けたことにより、この通気口４８を介し土質改良材が雰囲気とともに必要以上に吸引されることが防止される。
【００３２】
なお、土質改良材受入口３０からの雰囲気の流出量を低減させ、これにより外部への土質改良材の飛散を防止する限りにおいては、貯留部１４内で浮遊する土質改良材を必要以上に吸引しないように吸引装置５２の出力を適宜調整する等すれば、フィルタ４９を省略する構成も考えられる。
また、上記吸引装置５２は、自走式土質改良機に搭載せず、外部の装置として別途設けてもよく、さらに土質改良材の飛散を防止する限りにおいては、必ずしも、本実施の形態のように吸引装置５２を用いて積極的に内部雰囲気を吸引する構成とする必要はない。
【００３３】
次に、そのような吸引装置５２を省略した他の実施の形態を説明する。
図９は本発明の自走式土質改良機の他の実施の形態に備えられた土質改良材供給装置の詳細構造を表す側断面図で、先の各図と同様の部分には同符号を付し説明を省略する。
この図９に示すように、本実施の形態は、吸引装置５２及びこれに接続するフレキシブルホース５１（図２参照）を省略している点以外は、上記一実施の形態と同様の構成である。また、継ぎ手５０も省略して構わない。
本実施の形態においては、土質改良材貯留装置１４への土質改良材充填の際、導入される土質改良材に押しのけられる貯留部１５の内部雰囲気の大部分を、通気口４８から大気に逃がすようになっている。これによっても、土質改良材受入口３０からの内部雰囲気の流出量を低減し、そこからの土質改良材の飛散を防止抑制することができる。また、通気口４８にはフィルタ４９が設けられているので、通気口４８から土質改良材が流出することはなく、本実施の形態においても、上記同様、土質改良材貯留装置１４への土質改良材の充填の際の土質改良材の飛散を防止することができる。
【００３４】
次に、本発明の土質改良材供給方法の一実施の形態を説明する。
図１０は本発明の土質改良材供給方法の一実施の形態を表す図で、先の図８に対応する図であり、先の各図と同様の部分には同符号を付し説明を省略する。
この図１０に示すように、本実施の形態においては、フレキシブルコンテナ５３と、土質改良材貯留装置１４の土質改良材受入口３０との間を覆って、フレキシブルコンテナ５３内の土質改良材を土質改良材貯留装置１４に充填する。
すなわち、図１０において、６０はフレキシブルコンテナ５３を吊った状態でその下方以外の周囲を覆うカバーで、このカバー６０は、そのほぼ中央にフレキシブルコンテナ５３の吊手５５を挿通する挿通口（図示せず）を有する蓋体６１と、この蓋体６１の下部側外周部に垂設した筒状のカーテン体６２とで構成されている。このカーテン体６２の長さは、フレキシブルコンテナ５３の上下方向寸法よりも長く、蓋体６１の挿通口に吊手５５を通した状態でフレキシブルコンテナ５３を吊り上げ、このカーテン体６２の下部が土質改良材受入口３０内に入り込むように設置すれば、実質的に土質改良材受入口３０をほぼ密閉することができ、この状態で土質改良材の充填を行えば、土質改良材の飛散を防止することができる。
【００３５】
なお、図１０に示した土質改良材貯留装置１４及びこれを用いた自走式土質改良機は、上記の自走式土質改良機の一実施の形態のものと同様の構成で、導入される土質改良材により押しのけられる貯留部１５内の雰囲気は、吸引装置５２により吸引される。これにより、充填作業終了後にフレキシブルコンテナ５３を地面に戻す際等、一時的に土質改良材受入口３０が開放されたとしても、貯留部１５内で浮遊する土質改良材が土質改良材受入口３０を介して流出するすることを防止することができる。
また、勿論、本実施の形態の土質改良材供給方法は、先に説明したその他の構成の自走式土質改良機を用いて行う場合にも有効なものであり、さらに、仮に上記従来技術のように、通気口４８を備えていない自走式土質改良機に適用した場合にも、土質改良材の飛散は大幅に低減される。
【００３６】
次に、本発明の土質改良材供給方法の他の実施の形態を説明する。
図１１は本発明の土質改良材供給方法の他の実施の形態を表す図で、先の図８に対応する図であり、先の各図と同様の部分には同符号を付し説明を省略する。この図１１に示すように、本実施の形態は、いわゆるエアカーテンを利用したもので、フレキシブルコンテナ５３と、土質改良材貯留装置１４の土質改良材受入口３０との間に、この土質改良材受入口３０に向かう略円筒状の空気流を生じさせ、この空気流の内側を通過させて土質改良材貯留装置１４に土質改良材を充填する。
すなわち、図１１において、６３はほぼ中央にフレキシブルコンテナ５３の吊手５５を挿通する挿通口（図示せず）を有する蓋体、６４はこの蓋体６３の下部側外周部に設けた断面半円状のリング状のパイプで、上記蓋体６３の上部には、このパイプ６４の上方に位置するように複数の穴（図示せず）が設けられている。６５はこの各穴に連通するように蓋体６３に設けた複数の配管で、この配管６５の先には継ぎ手６６（特にその形状に限定はないが、カプラ等の着脱が容易なものが好ましい）を介してフレキシブルホース６７の一端が接続している。そして、このフレキシブルホース６７の他端は、図示しないコンプレッサに接続しており、このコンプレッサからの圧縮空気が、上記パイプ６４内に供給され、上記パイプ６４の下部側に所定の間隔で複数設けた図示しない噴出口から、図１１中１点鎖線矢印で示したように下方に噴出するようになっている。
【００３７】
このように、蓋体６３の挿通口に吊手５５を通した状態でフレキシブルコンテナ５３を土質改良材受入口３０上方に吊り上げた状態で、上記のように下方に圧縮空気を噴出することにより、土質改良材充填の際、土質改良材受入口３０に向かって流れるとともに、フレキシブルコンテナ５３の周囲を取り囲む空気流の幕（エアカーテン）を生成することができる。これにより、フレキシブルコンテナ５３と土質改良材受入口３０との間に、見かけ上隙間が生じていても、この隙間から流出しようとする、例えば充填される土質改良材の一部や土質改良材貯留装置１４内で舞い上がる土質改良材は、土質改良材受入口３０に向かって流れてくる空気流により土質改良材貯留装置１４内に導入される。従って、本実施の形態においても、土質改良材の周囲への飛散を防止することができる。
【００３８】
なお、図１１に示した土質改良材貯留装置１４及びこれを用いた自走式土質改良機も、上記の自走式土質改良機の一実施の形態のものと同様の構成であり、本実施の形態においても、充填作業終了後にフレキシブルコンテナ５３を地面に戻す際等の土質改良材の流出を防止することができる。また、本実施の形態の土質改良材供給方法は、先に説明したその他の構成の自走式土質改良機を用いて行う場合にも有効なものであり、上記従来技術のような自走式土質改良機に適用した場合にも、土質改良材の飛散が低減されることは言うまでもない。
【００３９】
次に本発明の土質改良材供給システムの一実施の形態を説明する。
図１２は本発明の土質改良材供給システムの一実施の形態の全体構成を表す側面図で、先の各図と同様の部分及びそれに相当する部分には同符号を付し説明を省略する。
この図１２に示すように、本実施の形態の土質改良材供給システムは、図１に示したものとほぼ同様の構成の自走式土質改良機と、この自走式土質改良機の土質改良材貯留装置１４内に土質改良材を送り込むポンプ６８と、このポンプ６８と土質改良材貯留装置１４とを接続する例えばフレキシブルホース等の通路６９とを備える。７０は上記ポンプ６８とフレキシブルコンテナ５３とを接続するフレキシブルホースである。なお、フレキシブルコンテナ５３、フレキシブルホース７０、ポンプ６８、通路６９及び土質改良材貯留装置１４間の各接続部分は、ほぼ密閉されている。
【００４０】
すなわち、本実施の形態においては、図１２のように土質改良材貯留装置１４に対し、その上記蓋３１を閉じた状態で、ポンプ６８により、フレキシブルコンテナ５３内の土質改良材を、フレキシブルホース７０及び上記通路６９を介し、天板部２９に設けた図示しない導入口から圧送するようになっている。従って、外部への土質改良材の飛散を防止することができ、またクレーン等の土質改良材充填用の重機を必要としないため、安全かつ迅速に土質改良材の充填作業を行うことができるというメリットもある。
【００４１】
なお、図１２において、上記ポンプ６８は、前述の自走式土質改良機の動力装置２４の一方側（図１２中左側）に配設する構成としたが、このように自走式土質改良機に設けなくとも、機外に別途用意してもよい。また、フレキシブルコンテナ５３内の土質改良材がほぼ全て土質改良材貯留装置１４内に圧送されるよう、上記フレキシブルホース７０はフレキシブルコンテナ５３内の底部付近まで挿入されていることが望ましい。
また、繁雑防止のため特に図示しなかったが、本実施の形態は、密閉した状態で土質改良材を土質改良材貯留装置１４に充填するため、先に図１乃至図９で説明した自走式土質改良機の各実施の形態のように、土質改良材貯留装置１４内の雰囲気を外部に逃がす構成と併用することが好ましい。
【００４２】
最後に、以上において、走行体１として履帯６を備える自走式土質改良機を例にとって説明してきたが、これに限られず、以上は例えばホイール式の走行体を備える自走式土質改良機に適用可能しても同様の効果を得る。
また、土砂及び土質改良材をパドルミキサにより混合して改良土を生成するいわゆるミキシング方式の混合装置１８を搭載した自走式土質改良機を例にとって説明したが、以上は、例えばソイルカッタ等を用いて土砂及び土質改良材を解砕混合し、さらに高速回転するロータリハンマ等を用いて細粒化する解砕方式の混合装置を搭載した自走式土質改良機に対しても適用できる。
【００４３】
【発明の効果】
請求項１に記載の発明によれば、その土質改良材貯留装置に内部雰囲気を外部に逃がす通気口を設けたので、土質改良材貯留装置への土質改良材の充填の際、外部に逃げようとする内部雰囲気の大部分をこの通気口から逃がすことにより、土質改良材の受入口からの内部雰囲気の流出量を低減することができる。また、通気口にフィルタを設けたことにより、この通気口から雰囲気とともに土質改良材が外部に流出することを防止することができ、土砂に添加する土質改良材を充填する際の土質改良材の飛散を防止することができる。
【００４５】
請求項３に記載の発明によれば、フィルタにより通気口からの土質改良材の流出を防止しつつ通気口から土質改良材貯留装置内部の雰囲気を外部へ逃がす構成とした上で土質改良材を収容した容器と土質改良材貯留装置の土質改良材受入口との間をカバーで覆った状態で土質改良材貯留装置への土質改良材の充填を行うので、充填の際の土質改良材の飛散をより確実に防止することができる。
【００４６】
請求項４に記載の発明によれば、フィルタにより通気口からの土質改良材の流出を防止しつつ通気口から土質改良材貯留装置内部の雰囲気を外部へ逃がす構成とした上で土質改良材を収容した容器と土質改良材受入口との間を容器から土質改良材受入口に向かう略円筒状の空気流の幕により覆うので、充填される土質改良材や土質改良材貯留装置から流出しようとする土質改良材を、空気流により土質改良材貯留装置内に導入させることができ、土質改良材の周囲への飛散をより確実に防止することができる。
【図面の簡単な説明】
【図１】本発明の自走式土質改良機の一実施の形態の全体構造を表す側面図である。
【図２】本発明の自走式土質改良機の一実施の形態に備えられた土質改良材貯留装置の詳細構造を表す側面図である。
【図３】本発明の自走式土質改良機の一実施の形態に備えられた土質改良材貯留装置の図２中矢印III方向から見た上面図である。
【図４】本発明の自走式土質改良機の一実施の形態に備えられた土質改良材貯留装置の図２中IV−IV断面による水平断面図である。
【図５】本発明の自走式土質改良機の一実施の形態に備えられた土質改良材貯留装置の高さ寸法を限縮させた状態を表す側面図である。
【図６】土質改良に用いる土質改良材を予め収容した容器の一例を表す図である。
【図７】土質改良に用いる土質改良材を予め収容した容器の他の例を表す図である。
【図８】本発明の自走式土質改良機の一実施の形態に備えられた土質改良材貯留装置の土質改良材充填時の状態を表す側断面図である。
【図９】本発明の自走式土質改良機の他の実施の形態に備えられた土質改良材供給装置の詳細構造を表す側断面図である。
【図１０】本発明の土質改良材供給方法の一実施の形態を表す図である。
【図１１】本発明の土質改良材供給方法の他の実施の形態を表す図である。
【図１２】本発明の土質改良材供給システムの一実施の形態の全体構成を表す側面図である。
【符号の説明】
１４土質改良材貯留装置
３０土質改良材受入口
４８通気口
４９フィルタ
５２吸引装置
５３フレキシブルコンテナ（容器）
５３’ フレキシブルコンテナ（容器）
６０カバー
６８ポンプ
６９通路[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a self-propelled soil improvement machine that mixes and improves received earth and sand with a soil improvement material, and is particularly capable of preventing scattering of the soil improvement material when filling the soil improvement material to be added to the earth and sand. Traveling soil improvement machine , Soil improvement material storage device used for this And soil improvement materials It relates to the supply method.
[0002]
[Prior art]
In recent years, in the context of promoting the reuse of waste, such as the formulation of the so-called construction recycling promotion plan by the Ministry of Construction (1997) There is a growing need for self-propelled soil improvement machines that mix the generated construction sediment with soil improvement materials to improve the soil for recycling.
[0003]
As such a self-propelled soil improvement machine, for example, the one described in Japanese Patent No. 2867235 has already been proposed. In this conventional technology, while transporting the earth and sand received by the hopper, the soil improvement material is added to the soil during transportation by the soil conditioner storage device and introduced into the mixing device, where the soil and the soil conditioner are blown by rotation. The improved soil generated by crushing and mixing by the child is carried out of the machine by the discharge conveyor.
The soil improvement material storage device is provided with a cutter with a sharp tip at the soil improvement material receiving port provided in the upper portion thereof, and a bag containing the soil improvement material is inserted by a mounted crane, A cut is made in the lower part of the bag with a cutter, and the soil improvement material storage device is filled with the soil improvement material from there.
[0004]
[Problems to be solved by the invention]
In general, self-propelled soil improvement machines are often carried directly into the site where the soil to be reformed is generated, taking advantage of its transportability or mobility, and there are also opportunities for their activity as the above-mentioned needs expand. Increasingly, the number of cases brought to operation sites in and around cities is also increasing.
[0005]
The soil improvement material storage device in the above prior art is filled with the soil improvement material as described above, but the soil improvement material storage device is almost sealed except for the above-described entrance, and the soil improvement material storage device is stored from the bag. When the soil quality improving material is filled in the apparatus, an internal atmosphere corresponding to the volume of the soil quality improving material to be filled flows out from the receiving port. At this time, since the soil improvement material used for soil improvement is generally a very small granular material such as lime or cement, for example, during the filling, the soil improvement material soars in the soil improvement material storage device, In addition to the atmosphere flowing out to the outside as described above, the air may flow out from the gap between the bag and the receiving port. Usually, since the operation site of the self-propelled soil improvement machine is outdoors, the outflowed soil improvement material may be scattered by wind or the like, which may cause contamination of the surrounding environment and human body.
[0006]
The present invention has been made on the basis of the above matters, and the purpose thereof is a self-propelled soil improvement machine capable of preventing scattering of the soil improvement material when filling the soil improvement material added to the earth and sand. , Soil improvement material storage device used for this And soil improvement materials It is to provide a supply method.
[0007]
[Means for Solving the Problems]
(1) In order to achieve the above-mentioned object, the present invention is a self-propelled soil improvement machine that mixes and reforms received earth and sand with a soil improvement material, and a soil improvement material storage device that stores the soil improvement material. And a vent provided in the soil improvement material storage device for releasing the atmosphere in the soil improvement material storage device to the outside, and a filter provided in the ventilation port. The soil improvement material is prevented from flowing out and the atmosphere inside the soil improvement material storage device is released to the outside. The
[0008]
In the self-propelled soil improvement machine of the present invention, the soil improvement material storage device is provided with a vent hole for releasing the internal atmosphere to the outside. That is, when the soil improvement material storage device is filled with the soil improvement material, most of the internal atmosphere that escapes to the outside is escaped from the vent, so that the internal atmosphere flows out from the soil improvement material inlet. The amount can be reduced. Further, by providing a filter in the vent, it is possible to prevent the soil improvement material from flowing out of the vent together with the atmosphere. Accordingly, it is possible to prevent scattering of the soil quality improving material when the soil quality improving material added to the earth and sand is filled.
[0011]
( 2 In order to achieve the above object, the present invention also relates to a soil improvement material storage device for storing a soil improvement material to be added to the earth and sand, a ventilation port for escaping the internal atmosphere to the outside, and a filter provided in the ventilation port. With The soil improvement material is prevented from flowing out and the atmosphere inside the soil improvement material storage device is released to the outside. The
[0014]
( 3 In order to achieve the above object, the soil improvement material supply method of the present invention comprises: A self-propelled soil conditioner's soil conditioner storage device is equipped with a vent that allows the internal atmosphere to escape to the outside. A container containing a soil improvement material; Said Cover the space between the soil improvement material receiving port provided at the top of the soil improvement material storage device with a cover and fill the soil improvement material storage device with the soil improvement material from the container in this state And, while preventing the soil improvement material from flowing out to the outside by the filter provided in the ventilation hole, the atmosphere inside the soil improvement material storage device is released from the ventilation hole to the outside. .
[0015]
In the soil improvement material supply method of the present invention, The filter is designed to allow the atmosphere inside the soil conditioner storage device to escape from the vent while preventing the soil conditioner from flowing out from the vent. Since the soil improvement material storage device is filled with the soil improvement material storage device with the cover between the container containing the soil improvement material and the soil improvement material receiving port of the soil improvement material storage device, the soil quality at the time of filling Splash of improved materials More reliably Can be prevented.
[0016]
( 4 In order to achieve the above object, and the soil quality improving material supply method of the present invention, A self-propelled soil conditioner's soil conditioner storage device is equipped with a vent that allows the internal atmosphere to escape to the outside. A container containing a soil improvement material; Said A substantially cylindrical air flow toward the soil improvement material receiving port is generated between the soil improvement material receiving port provided at the upper part of the soil improvement material storage device, and the inside of the substantially cylindrical air flow from the container is formed. Fill the soil conditioner storage device with the soil conditioner so that it passes through And, while preventing the soil improvement material from flowing out to the outside by the filter provided in the ventilation hole, the atmosphere inside the soil improvement material storage device is released from the ventilation hole to the outside. .
[0017]
In the soil improvement material supply method of the present invention, The filter is designed to allow the atmosphere inside the soil conditioner storage device to escape from the vent while preventing the soil conditioner from flowing out from the vent. Container containing soil improvement material And soil Between the quality improvement material storage unit and the soil quality improvement material entrance Yong Vessel Soil Covered by a substantially cylindrical air flow curtain toward the quality improvement material inlet. As a result, even if there is an apparent gap between the container and the soil conditioner receiving port, the soil conditioner that is about to flow out of the soil conditioner or the soil conditioner storage device to be filled is not received. It is introduced into the soil conditioner storage device by a curtain of airflow flowing toward the inlet. Therefore, the scattering of soil improvement material around More reliably Can be prevented.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a self-propelled soil improvement machine of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing the overall structure of an embodiment of a self-propelled soil improvement machine of the present invention.
In FIG. 1, reference numeral 1 denotes a traveling body. The traveling body 1 includes a track frame 2, driven wheels 3 and drive wheels 4 provided at both ends of the track frame 2, and a drive device 5 directly connected to the drive wheels 4. And a crawler belt 6 hung around the driven wheel 3 and the drive wheel 4. 7 is a main body frame of the self-propelled soil improvement machine of the present embodiment, and this main body frame 7 is appropriately composed of a steel material such as a square pipe, and is disposed substantially horizontally above the track frame 2 above. Has been.
8 is a sieving device for selecting the earth and sand to be charged according to the particle size. This sieving device 8 has a lattice 9 of a predetermined size mounted inside, and is one side in the longitudinal direction of the main body frame 7 (left side in FIG. 1). ) The upper part of the grid 9 is supported so as to be able to vibrate via a spring 10 so that the larger one than the size of the grid 9 is removed and the smaller one is guided downward. Reference numeral 11 denotes a so-called punch provided above the sieving device 8 in consideration of the ability to put earth and sand into the sieving device 8. Reference numeral 12 denotes a hopper that receives the earth and sand selected by the sieving device 8, and this hopper 12 is formed in a frame shape that expands upward, and is one side in the longitudinal direction of the body frame 7 so as to be positioned below the sieving device 8 ( It is supported on the left side in FIG. Reference numeral 13 denotes a transfer conveyor for transferring the earth and sand in the hopper 12, and the transfer conveyor 13 is supported by the main body frame 7 so as to be inclined upward from the lower side of the hopper 12 in the transfer direction (right direction in FIG. 1). Has been.
[0019]
14 is a soil improvement material storage device for storing a soil improvement material used for soil improvement. This soil improvement material storage device 14 is used for storing the soil improvement material in the storage unit 15 and the soil on the transport conveyor 13. It is comprised with the supply part 16 which adds a soil improvement material, and the storage part 15 is supported by several (for example, three) support | pillar 17 standingly arranged in the longitudinal direction (left-right direction in FIG. 1) center of the main body frame 7. (The details of the soil improvement material storage device 14 will be described later).
Reference numeral 18 denotes a mixing device for generating improved soil, which is not particularly shown in order to prevent congestion, but this mixing device 18 includes a plurality of paddle type mixers (not shown) substantially parallel to the inside. The earth and sand introduced from the conveyor 13 and the soil quality improver are mixed to produce improved soil. Further, the mixing device 18 is provided substantially horizontally in the vicinity of the center in the longitudinal direction (left and right direction in FIG. 1) of the main body frame 7. 19 is provided with an improved soil outlet 20 at the bottom of the other side (right side in FIG. 1). A drive device 21 drives the paddle mixer.
[0020]
22 is a discharge conveyor for discharging the improved soil generated by the mixing device 18 to the outside of the machine. The discharge conveyor 22 is supported by being suspended from the main body frame 7 by a support member 23 and the like, and from below the outlet 20 of the mixing device 18. It is inclined upward in the transport direction (right direction in FIG. 1).
Reference numeral 24 denotes a power unit provided with a drive source for the self-propelled soil improvement machine of the present embodiment. This power unit 24 has a support member 25 at the end in the other side in the longitudinal direction of the main body frame 7 (right side in FIG. 1). Is supported through. Although not specifically shown for preventing congestion, the power unit 24 includes an engine, at least one hydraulic pump driven by the engine, and a plurality of pressure oils that control pressure oil supplied from the hydraulic pump to each driving unit. Built-in control valve.
[0021]
Here, the detailed structure of the soil improvement material storage device 14 will be described below.
FIG. 2 is a side view showing the detailed structure of the soil improvement material storage device 14, and the left side in FIG. 2 is a perspective view showing the internal structure.
As shown in FIG. 2, the above-described storage portion 15 is formed in a substantially cylindrical box shape. Strictly speaking, the support column 17 supports the storage portion 15 via a base plate 26. ing. The storage unit 15 includes a bottomed cylindrical lower tank unit 27, an accordion-shaped upper tank unit 28 connected to the upper part thereof, and a top plate part 29 provided so as to cover the upper part thereof. It is configured.
[0022]
3 is a top view of the soil improvement material storage device 14 as viewed from the direction of arrow III in FIG. 2, and FIG. 4 is a horizontal sectional view taken along the line IV-IV in FIG.
Referring to FIGS. 3 and 4 and FIG. 2 above, reference numeral 30 denotes a ring-shaped soil conditioner filling inlet provided in the center of the top plate portion 29, and 31 denotes the soil conditioner inlet 30. The lid 31 is a lid that opens and closes. The lid 31 is attached to the top plate portion 29 by a hinge 32. When the lid 31 is opened, for example, a stopper (not shown) provided near the hinge 32 on the top plate portion 29 is used to receive the soil improvement material. It is held at a predetermined angle that expands upward so as to guide the acceptance of the soil improvement material to the entrance 30. A handle 33 is provided in consideration of the convenience of opening and closing the lid 31.
Reference numeral 34 denotes a lattice member provided below the top plate portion 29, and this lattice member 34 is suspended via a chain 35 so as to be positioned below the soil improvement material receiving port 30. Reference numeral 36 denotes a cutter provided on the lattice member 34. A plurality of the cutters 36 can be rotated on the lattice member 36 via pins 37 as indicated by arrows in FIG. 2 (four in this example). Usually, as shown by the solid and broken lines in FIG. 2, the tips are brought into contact with each other (or close together) to form an upwardly reduced diameter shape, and self-propelled soil improvement When the machine is transported, etc., as indicated by the two-dot chain line in FIG.
[0023]
38 is a plurality of (three in this example) mounting portions provided on the outer peripheral portion of the top plate portion 29, 39 is a support post fixedly suspended from each mounting portion 38, and this support post 39 is the aforementioned base plate. 26 is inserted into a guide tube 40 provided so as to penetrate through 26. Reference numeral 41 denotes a pin hole provided in the support post 39 at a predetermined pitch, and reference numeral 42 denotes a stopper pin inserted into the pin hole 41 via the guide tube 40.
That is, by extending or contracting the above-described upper tank portion 28 formed in a bellows shape, the support post 39 is guided by the guide tube 40 and slides in the vertical direction. Thereby, the internal volume of the storage part 15 is changed, and the internal volume of the storage part 15 is reduced by inserting the stopper pin 42 through the guide tube 40 into the predetermined pin hole 41 provided in the support post 39 in this state. It can be set to a desired value.
At this time, when the self-propelled soil conditioner is transported by a trailer or the like, as shown in FIG. 5, by tilting the cutter 36 in the horizontal direction and holding the upper tank portion 28 in a contracted manner as described above, The height dimension of the storage part 15 is reduced, and the total height of the self-propelled soil improvement machine can be lowered to a height that clears the transportation restriction.
[0024]
In FIG. 5 or FIG. 2 above, reference numeral 43 denotes a hopper agitation means provided in the lower tank part 27. The hopper agitation means 43 is not shown in detail in order to prevent congestion, but the lower tank part A plurality of (for example, four) agitating blades 44 are radially attached to a rotating shaft that penetrates substantially the center of the bottom portion 27 and extends downward so as to be close to the bottom portion of the lower tank portion 27. Then, by rotating the stirring blade 44, most of the soil improvement material near the bottom of the lower tank portion 27 is moved to the outer peripheral side of the lower tank portion 27. Reference numeral 45 denotes a driving device for the hopper stirring means 43.
Further, although not shown in particular, a soil quality improving material outlet port connected to the supply unit 16 is provided at a predetermined position on the outer peripheral side of the bottom portion of the lower tank portion 27, so that the soil quality improvement in the lower tank portion 27 is provided. The material is sequentially led out to the supply unit 16 by the hopper stirring means 43 in the manner described above.
The supply unit 16 is composed of a known so-called rotary feeder, and a predetermined amount of soil improvement material approximately proportional to the rotational speed of the rotor 46 provided therein is sequentially added to the earth and sand on the transport conveyor 13 therebelow. It is supposed to be. Reference numeral 47 denotes a driving device for the rotor 46, which is not particularly shown, and this driving device 47 is connected to the rotating shaft of the rotor 46 by a chain or the like.
[0025]
2 to 5, reference numerals 48 and 49 denote a vent (see FIG. 3), which is the greatest feature of the present invention, and a filter provided in the vent pipe 48. The vent 48 is the top plate portion 29 described above. A plurality of (in this example, four, but at least one) may be provided, and the filter 49 may be located in the storage portion 15 with respect to the plurality of vent holes 48, respectively. It is provided at the bottom. However, the filter 49 is not necessarily provided in the storage unit 15, and may be provided outside, for example, so as to be fitted into the vent 48.
50 is a joint that is flange-connected to the top plate portion 29 so as to be connected to the vent 48, 51 is a flexible hose having one end flanged to the joint 50, and the other end of the flexible hose 51 is a suction device 52 (FIG. 1). Connected). That is, in the present embodiment, the suction device 52 sucks the atmosphere in the storage unit 15 through the vent 48.
[0026]
Note that when the storage unit 15 is filled with the soil improvement material, the soil improvement material previously stored in the container is transferred to the storage unit 15.
FIG. 6 is a diagram illustrating an example of a container in which a soil improvement material used for soil improvement is stored in advance.
In FIG. 6, reference numeral 53 denotes a flexible container as a container for the soil improvement material. The flexible container 53 includes a bag body 54 such as a hemp bag containing the soil improvement material, and side and bottom portions of the bag body 54. And a suspension 55 that also serves as a reinforcement.
[0027]
Fig.7 (a) and FIG.7 (b) are figures showing the other example of the container which accommodated the soil improvement material used for soil improvement beforehand.
As shown in FIGS. 7 (a) and 7 (b), the flexible container 53 ′ in this example is composed of a bag body 54 ′ and a suspension 55 as in FIG. The difference from this is that a discharge port 56 is provided in advance in the lower part of the bag 54 '. Specifically, the lower portion of the bag body 54 ′ is partially cut, and a plurality of (four in this example) lids 57 that hold or open the discharge port 56 by the cut are formed. The lid 57 is normally connected to each other by a rope 58 as shown in FIG. 7A and is held in the bag body 54 ′ in a state where the discharge port 56 of the soil improvement material is folded, and the rope 58 is removed. Then, as shown in FIG. 7B, the cylindrical discharge port 56 that has been disconnected and held is opened to the outside of the bag body 54 ', and the soil improvement material is led out to the outside. ing. In addition, 59 is a rope which restrict | squeezes the discharge port 56, in order to adjust the derived | leading-out amount of a soil improvement material.
[0028]
When the soil improvement material in the flexible container 53 of FIG. 6 is transferred to the storage unit 15 of the soil improvement material storage device 14, as shown in FIG. 8, first, the above-described lid 31 is opened and the soil improvement material receiving port 30 is opened. Then, the flexible container 53 is lifted by, for example, a crane (not shown) using the lifting hand 55 and inserted into the soil improvement material receiving port 30 (a state indicated by a two-dot chain line in FIG. 8). At this time, the flexible container 53 is pressed against the above-described cutter 36 by its own weight, and a cut is made in the lower portion thereof, and then the flexible container 53 is slightly lifted (in the state of the solid line in FIG. 8). It is opened and the soil quality improvement material inside is introduced into the soil quality improvement material storage device 14.
In addition, when transferring the soil improvement material in said flexible container 53 'to the soil improvement material storage apparatus 14, similarly, the flexible container 53' is improved in the state shown in Fig.7 (a) using a crane etc. The soil improvement material is introduced into the soil quality improvement material storage device 14 through the discharge port 56 by being installed at the material reception port 30 position and setting the state shown in FIG.
In addition, these flexible containers 53 and 53 'are corresponded to the container which accommodated the soil improvement material as described in a claim.
[0029]
Next, the operation and action of the self-propelled soil improvement machine of the present embodiment whose configuration has been described above will be described.
For example, when soil to be modified is introduced into the sieving device 8 by a hydraulic excavator or the like, the earth and sand that has passed through the lattice 9 of the sieving device 8 is introduced into the lower hopper 12 and conveyed by the conveyor 13. And the earth and sand conveyed by this conveyance conveyor 13 are introduce | transduced into the mixing apparatus 18 with the soil quality improvement material added from the soil quality improvement material storage apparatus 14 during conveyance, and are discharged after being stirred and mixed uniformly here by a paddle mixer. It is conveyed by the conveyor 22 and discharged out of the machine.
[0030]
Here, the filling work of the soil improvement material into the soil improvement material storage device 14 has been described with reference to FIG. 8, but as can be seen from FIG. 8, when the ventilation port 48 is not provided, the soil improvement material is provided. The storage device 14 (strictly, the storage portion 15) is in a state of being substantially sealed except for the upper soil quality improvement material receiving port 30, and corresponds to the volume of the soil quality improvement material introduced at the time of filling. The internal atmosphere of the minute flows out from the soil quality improvement material receiving port 30. At this time, since the soil improvement material used for soil improvement is generally a very small granular material such as lime or cement, for example, the soil improvement material is swollen in the soil improvement material storage device 14 during the filling. In addition to the atmosphere that flows out from the soil improvement material receiving port 30, it may flow out of the gap between the flexible container 53 and the soil quality improving material receiving port 30. Usually, since the operation site of the self-propelled soil improvement machine is outdoors, the outflowed soil improvement material may be scattered by wind or the like, which may cause contamination of the surrounding environment and human body.
[0031]
On the other hand, in the self-propelled soil improvement machine of the present embodiment, as described above, the internal atmosphere of the soil improvement material storage device 14 is actively suctioned by the suction device 52 through the vent 48. ing. That is, when the soil improvement material is filled, the majority of the internal atmosphere which is pushed away by the introduced soil improvement material and escapes to the outside of the soil improvement material storage device 14 is sucked through the ventilation port 48, The outflow amount of the internal atmosphere from the improving material receiving port 30 can be reduced, and scattering to the outside of the soil improving material can be prevented when filling the soil improving material. Further, by providing the filter 49 in the vent 48, the soil improving material is prevented from being sucked together with the atmosphere through the vent 48 more than necessary.
[0032]
In addition, as long as the amount of outflow of the atmosphere from the soil improvement material receiving port 30 is reduced and thereby the scattering of the soil quality improvement material to the outside is prevented, the soil quality improvement material floating in the storage unit 14 is sucked more than necessary. If the output of the suction device 52 is appropriately adjusted so as not to cause a problem, a configuration in which the filter 49 is omitted can be considered.
Further, the suction device 52 may not be mounted on the self-propelled soil improvement machine, but may be provided as an external device. As long as the soil improvement material is prevented from being scattered, the suction device 52 is not necessarily as in the present embodiment. In addition, it is not necessary to use a suction device 52 to positively suck the internal atmosphere.
[0033]
Next, another embodiment in which such a suction device 52 is omitted will be described.
FIG. 9 is a side sectional view showing a detailed structure of a soil improvement material supply device provided in another embodiment of the self-propelled soil improvement machine of the present invention. The description is omitted.
As shown in FIG. 9, the present embodiment has the same configuration as that of the above embodiment except that the suction device 52 and the flexible hose 51 (see FIG. 2) connected thereto are omitted. . Further, the joint 50 may be omitted.
In the present embodiment, when the soil improvement material storage device 14 is filled with the soil improvement material, most of the internal atmosphere of the storage portion 15 that is pushed away by the introduced soil improvement material is released from the vent 48 to the atmosphere. It has become. Also by this, the outflow amount of the internal atmosphere from the soil quality improvement material receiving port 30 can be reduced, and scattering of the soil quality improvement material from there can be prevented and suppressed. Further, since the filter 49 is provided in the vent 48, the soil quality improving material does not flow out from the vent 48, and in this embodiment, the soil quality improvement to the soil quality improving material storage device 14 is also performed as described above. It is possible to prevent the soil quality improving material from being scattered when the material is filled.
[0034]
Next, an embodiment of the soil improvement material supply method of the present invention will be described.
FIG. 10 is a diagram showing an embodiment of the soil quality improving material supply method of the present invention, and is a diagram corresponding to FIG. 8 above. To do.
As shown in FIG. 10, in this embodiment, the soil improvement material in the flexible container 53 is covered with the soil by covering the space between the flexible container 53 and the soil improvement material receiving port 30 of the soil improvement material storage device 14. The improvement material storage device 14 is filled.
That is, in FIG. 10, 60 is a cover that covers the periphery of the flexible container 53 in a state where the flexible container 53 is suspended, and this cover 60 has an insertion port (not shown) through which the suspension 55 of the flexible container 53 is inserted at substantially the center. 2) and a cylindrical curtain body 62 suspended from the outer periphery of the lower side of the lid 61. The length of the curtain body 62 is longer than the vertical dimension of the flexible container 53, and the flexible container 53 is lifted with the suspension 55 passing through the insertion opening of the lid body 61. The lower portion of the curtain body 62 is improved in soil quality. If installed so as to enter the material receiving port 30, the soil improving material receiving port 30 can be substantially sealed, and if the soil improving material is filled in this state, scattering of the soil improving material is prevented. be able to.
[0035]
In addition, the soil improvement material storage apparatus 14 shown in FIG. 10 and the self-propelled soil improvement machine using the same are introduced with the same configuration as that of the above-described embodiment of the self-propelled soil improvement machine. The atmosphere in the reservoir 15 that is pushed away by the soil improvement material is sucked by the suction device 52. As a result, even when the soil improvement material receiving port 30 is temporarily opened, for example, when the flexible container 53 is returned to the ground after the filling operation is completed, the soil improvement material floating in the storage unit 15 is removed. It is possible to prevent outflow through the
Of course, the soil improvement material supply method of the present embodiment is also effective when the self-propelled soil improvement machine having the other configuration described above is used. As described above, even when applied to a self-propelled soil improvement machine that does not include the vent 48, scattering of the soil improvement material is greatly reduced.
[0036]
Next, another embodiment of the soil quality improving material supply method of the present invention will be described.
FIG. 11 is a view showing another embodiment of the soil quality improving material supply method of the present invention, and is a view corresponding to FIG. 8, and the same reference numerals are given to the same parts as those in the previous drawings, Omitted. As shown in FIG. 11, this embodiment uses a so-called air curtain, and this soil improvement material is provided between the flexible container 53 and the soil improvement material receiving port 30 of the soil improvement material storage device 14. A substantially cylindrical air flow toward the receiving port 30 is generated, and the soil improvement material storage device 14 is filled with the soil improvement material through the inside of the air flow.
That is, in FIG. 11, 63 is a lid having an insertion port (not shown) through which the handle 55 of the flexible container 53 is inserted substantially at the center, and 64 is a semicircular cross-section provided on the lower outer peripheral portion of the lid 63. A plurality of holes (not shown) are provided in the upper part of the lid 63 so as to be positioned above the pipe 64. Reference numeral 65 denotes a plurality of pipes provided in the lid 63 so as to communicate with the holes. A joint 66 (the shape of the pipe 65 is not particularly limited, but a coupler or the like that can be easily attached and detached is preferable. ), One end of the flexible hose 67 is connected. The other end of the flexible hose 67 is connected to a compressor (not shown), and compressed air from the compressor is supplied into the pipe 64, and a plurality of the compressed hoses 67 are provided at predetermined intervals on the lower side of the pipe 64. As shown by a one-dot chain line arrow in FIG.
[0037]
Thus, in the state where the flexible container 53 is lifted above the soil improvement material receiving port 30 in a state where the suspension 55 is passed through the insertion port of the lid 63, the compressed air is jetted downward as described above. When filling the soil improvement material, it is possible to generate an air flow curtain (air curtain) that flows toward the soil improvement material receiving port 30 and surrounds the flexible container 53. As a result, even if there is an apparent gap between the flexible container 53 and the soil improvement material receiving port 30, for example, a part of the soil improvement material to be filled or the storage of the soil improvement material is stored. The soil improvement material that soars in the device 14 is introduced into the soil improvement material storage device 14 by the air flow flowing toward the soil improvement material receiving port 30. Accordingly, also in the present embodiment, scattering of the soil quality improving material to the surroundings can be prevented.
[0038]
In addition, the soil improvement material storage apparatus 14 shown in FIG. 11 and the self-propelled soil improvement machine using the same have the same configuration as that of the above-described embodiment of the self-propelled soil improvement machine. Also in this form, it is possible to prevent the soil-improving material from flowing out when the flexible container 53 is returned to the ground after completion of the filling operation. In addition, the soil improvement material supply method of the present embodiment is also effective when performed using the self-propelled soil improvement machine having the other configuration described above. Needless to say, even when applied to a soil conditioner, scattering of the soil conditioner is reduced.
[0039]
Next, an embodiment of the soil improvement material supply system of the present invention will be described.
FIG. 12 is a side view showing the overall configuration of an embodiment of the soil improvement material supply system of the present invention. The same reference numerals are given to the same parts as those in the previous figures and the description thereof will be omitted.
As shown in FIG. 12, the soil improvement material supply system of the present embodiment includes a self-propelled soil improvement machine having substantially the same configuration as that shown in FIG. 1, and a soil improvement of the self-propelled soil improvement machine. A pump 68 for feeding the soil improvement material into the material storage device 14 and a passage 69 such as a flexible hose for connecting the pump 68 and the soil improvement material storage device 14 are provided. A flexible hose 70 connects the pump 68 and the flexible container 53. In addition, each connection part between the flexible container 53, the flexible hose 70, the pump 68, the channel | path 69, and the soil improvement material storage apparatus 14 is sealed substantially.
[0040]
That is, in the present embodiment, as shown in FIG. 12, the soil improvement material in the flexible container 53 is transferred to the flexible hose 70 by the pump 68 with the lid 31 closed with respect to the soil improvement material storage device 14. In addition, pressure is fed from an inlet (not shown) provided in the top plate portion 29 through the passage 69. Therefore, it is possible to prevent scattering of the soil conditioner to the outside, and because it does not require heavy equipment for filling the soil conditioner such as a crane, it is possible to perform the work of filling the soil conditioner safely and quickly. There are also benefits.
[0041]
In FIG. 12, the pump 68 is arranged on one side (left side in FIG. 12) of the power unit 24 of the above-mentioned self-propelled soil improvement machine. Even if not provided, it may be prepared separately outside the machine. Further, it is desirable that the flexible hose 70 is inserted to the vicinity of the bottom in the flexible container 53 so that almost all of the soil improvement material in the flexible container 53 is pumped into the soil improvement material storage device 14.
Further, although not shown in particular for preventing congestion, the present embodiment fills the soil improvement material storage device 14 with the soil improvement material in a sealed state, so that the self-propelled described above with reference to FIGS. It is preferable to use together with the structure which escapes the atmosphere in the soil improvement material storage apparatus 14 outside like each embodiment of a type | formula soil improvement machine.
[0042]
Finally, in the above description, the self-propelled soil conditioner equipped with the crawler belt 6 as the traveling body 1 has been described as an example. However, the present invention is not limited to this. Even if applicable, the same effect is obtained.
In addition, a self-propelled soil improvement machine equipped with a so-called mixing type mixing device 18 that mixes earth and sand and a soil improvement material with a paddle mixer to generate improved soil has been described as an example. The present invention can also be applied to a self-propelled soil improvement machine equipped with a crushing type mixing device for crushing and mixing earth and sand and a soil improvement material, and further using a rotary hammer that rotates at high speed.
[0043]
【The invention's effect】
According to the first aspect of the present invention, since the soil improvement material storage device is provided with the vent for releasing the internal atmosphere to the outside, when the soil improvement material storage device is filled with the soil improvement material, let it escape to the outside. By letting most of the internal atmosphere to escape from this vent, the outflow amount of the internal atmosphere from the soil improvement material receiving port can be reduced. Moreover, by providing a filter in the vent, it is possible to prevent the soil improver from flowing out of the vent together with the atmosphere, and the soil improver when filling the soil improver to be added to the earth and sand. Scattering can be prevented.
[0045]
Claim 3 According to the invention described in The filter is designed to allow the atmosphere inside the soil conditioner storage device to escape from the vent while preventing the soil conditioner from flowing out from the vent. Since the soil improvement material storage device is filled with the soil improvement material storage device with the cover between the container containing the soil improvement material and the soil improvement material receiving port of the soil improvement material storage device, the soil quality at the time of filling Splash of improved materials More reliably Can be prevented.
[0046]
Claim 4 According to the invention described in The filter is designed to allow the atmosphere inside the soil conditioner storage device to escape from the vent while preventing the soil conditioner from flowing out from the vent. Container containing soil improvement material And soil Between quality improvement material entrance Yong Vessel Soil Since it is covered with a substantially cylindrical air flow curtain toward the quality improvement material receiving port, the soil quality improvement material that is about to flow out from the soil quality improvement material and the soil quality improvement material storage device to be filled in the soil quality improvement material storage device by the air flow Can be introduced to the surrounding area, and the soil around the soil improvement material More reliably Can be prevented.
[Brief description of the drawings]
FIG. 1 is a side view showing the overall structure of an embodiment of a self-propelled soil improvement machine of the present invention.
FIG. 2 is a side view showing a detailed structure of a soil improvement material storage device provided in an embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 3 is a top view of the soil improvement material storage device provided in an embodiment of the self-propelled soil improvement machine of the present invention as seen from the direction of arrow III in FIG. 2;
FIG. 4 is a horizontal sectional view taken along the IV-IV section in FIG. 2 of the soil improvement material storage device provided in an embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 5 is a side view showing a state where the height dimension of the soil improvement material storage device provided in the embodiment of the self-propelled soil improvement machine of the present invention is limited.
FIG. 6 is a diagram illustrating an example of a container in which a soil improvement material used for soil improvement is stored in advance.
FIG. 7 is a diagram illustrating another example of a container in which a soil improvement material used for soil improvement is stored in advance.
FIG. 8 is a side sectional view showing a state of the soil improvement material storage device provided in the embodiment of the self-propelled soil improvement machine of the present invention when the soil improvement material is filled.
FIG. 9 is a side sectional view showing a detailed structure of a soil improvement material supply device provided in another embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 10 is a diagram showing an embodiment of the soil improvement material supply method of the present invention.
FIG. 11 is a diagram showing another embodiment of the soil improvement material supply method of the present invention.
FIG. 12 is a side view showing the overall configuration of an embodiment of the soil improvement material supply system of the present invention.
[Explanation of symbols]
14 Soil improvement material storage device
30 Soil improvement material entrance
48 Vent
49 Filter
52 Suction device
53 Flexible container
53 'Flexible container
60 cover
68 pumps
69 passage

Claims

In the self-propelled soil improvement machine that mixes and reforms the received earth and sand with the soil improvement material,
A soil improvement material storage device for storing the soil improvement material;
A vent hole provided in the soil improvement material storage device, for venting the atmosphere in the soil improvement material storage device to the outside;
With a filter provided in this vent ,
A self-propelled soil conditioner configured to prevent the soil conditioner from flowing out to the outside and to release the atmosphere inside the soil conditioner storage apparatus to the outside .

In the soil improvement material storage device for storing the soil improvement material to be added to the soil,
A vent that escapes the internal atmosphere to the outside,
With a filter provided in this vent ,
A soil improvement material storage device characterized in that the soil improvement material is prevented from flowing out and the atmosphere inside the soil improvement material storage device is released to the outside .

A self-propelled soil conditioner's soil conditioner storage device is equipped with a vent that allows the internal atmosphere to escape to the outside.
Covered with a cover between the container containing the soil improvement agent the soil improvement agent storage device soil improvement agent inlet opening which is provided in the upper,
In this state, the soil improvement material storage device is filled with the soil improvement material storage device, and the soil improvement material is stored from the ventilation port while preventing the soil improvement material from flowing out by a filter provided in the ventilation port. A soil quality improving material supplying method characterized in that the atmosphere inside the apparatus is released to the outside .

A self-propelled soil conditioner's soil conditioner storage device is equipped with a vent that allows the internal atmosphere to escape to the outside.
Between the container containing the soil improvement agent the soil improvement agent storage device soil improvement agent inlet opening which is provided in the upper, causing a substantially cylindrical air flow towards the soil improvement agent inlet opening,
The soil improvement material storage device is filled with a soil improvement material so as to pass through the inside of the substantially cylindrical air flow from the container, and the soil improvement material is discharged to the outside by a filter provided in the vent. A soil improvement material supply method , wherein the atmosphere inside the soil improvement material storage device is released to the outside from the vent while preventing .