JP3578256B2

JP3578256B2 - Conveyor endless band sealing device and self-propelled soil improvement machine

Info

Publication number: JP3578256B2
Application number: JP33187897A
Authority: JP
Inventors: 安洋鴨志田; 泰弘吉田; 光伸山田
Original assignee: Komatsu Ltd
Current assignee: Komatsu Ltd
Priority date: 1997-12-02
Filing date: 1997-12-02
Publication date: 2004-10-20
Anticipated expiration: 2017-12-02
Also published as: JPH11165828A

Description

【０００１】
【発明の属する技術分野】
本発明は、自走式土質改良機の原料土搬送装置と原料土ホッパとの間をシールする装置等に用いられるコンベヤの無端帯状体とサイドプレートの間をシールするコンベヤ無端帯状体のシール装置及び自走式土質改良機に関する。
【０００２】
【従来の技術】
土砂やセメント等の粉粒物を搬送するコンベヤにおいては、コンベヤの幅方向両側にサイドプレートを設けて粉粒物がコンベヤの幅方向両側からこぼれ落ちないようにしているが、そのサイドプレート下端部とコンベヤとの間には隙間が有り、その隙間から粉粒物がこぼれ落ちることがある。
【０００３】
このことを解消するために、例えば特開平６−１１５６５６号公報に示すように、サイドプレートの下部寄りにスカートベルトと呼ばれるゴム製のシール片を取付け、このシール片をコンベヤの幅方向両側に接したシール装置が提案されている。
【０００４】
【発明が解決しようとする課題】
駆動輪と従動輪に無端帯状体を巻掛け、その駆動輪で無端帯状体の幅方向中央部を駆動すると共に、従動輪、ガイドローラで無端帯状体の幅方向中央部を支持したコンベヤが提案されている。
【０００５】
このコンベヤは無端帯状体の幅方向中央部を支持しているから、偏荷重等により無端帯状体が水平に対して幅方向に斜めに変位することがあり、前述のシール装置であると無端帯状体が斜めに変位した時に一方のシール片と無端帯状体の幅方向一方側との間に大きな隙間が生じ、その大きな隙間から粉粒物がこぼれ落ちることがある。
【０００６】
そこで、本発明は前述の課題を解決できるようにしたコンベヤ無端帯状体のシール装置及び自走式土質改良機を提供することを目的とする。
【０００７】
【課題を解決するための手段及び作用効果】
第１の発明は、表面３４の幅方向両端部に長手方向に連続した突起部３５を有したゴム製無端帯３２に複数の芯金３３を長手方向に間隔を置いて埋設したゴムベルト製の無端帯状体１６とし、その無端帯状体１６の幅方向中央部のみを支持して回転動するコンベヤと、このゴム製無端帯３２の表面３４の幅方向両端部に沿って搬送方向に向けて設けた一対のサイドプレートと、この各サイドプレートに取付けられたシール片５４を備え、
この各シール片５４の下端部がゴム製無端帯３２の表面３４及び突起部３５の内側面３５ａと隙間を置いて対向してラビリンスタイプの上部シール機構を構成し、
前記ゴム製無端帯３２の裏面３６幅方向両端部と隙間を置いて対向したガイド部材５８を設けたことを特徴とするコンベヤ無端帯状体のシール装置である。
【０００８】
第１の発明によれば、無端帯状体１６が水平に対して左右に斜めとなるとガイド部材５８に摺接して無端帯状体１６はほぼ水平状態で回転駆動する。
これによって、無端帯状体１６の表面幅方向両側部と一対のサイドプレートとの間をシール片５４でシールして搬送される粉粒物がこぼれ落ちたり、浮遊している粉粒物等が漏れることを確実に防止できる。
【０００９】
また、シール片５４の下端部がゴム製無端帯３２の表面３４及び突起部３５の内側面３５ａと隙間を置いて対向してラビリンスタイプの上部シール機構を構成しているし、ガイド部材５８はゴム製無端帯３２の裏面３６と隙間を置いて対向しているから、シール片５４、ガイド部材５８やゴム製無端帯３２の表面３４、裏面３６が早期に摩耗することがなく耐久性が向上するし、無端帯状体１６の回転抵抗が大きくならないから、その駆動力を必要以上に大きくする必要がない。
【００１０】
第２の発明は、幅方向両端部に表面よりも突出した突起部を備えた金属製の板６０を無端状に複数連結した金属チェーン製の無端帯状体１６とし、この無端帯状体１６の幅方向中央部のみを支持して回転動するコンベヤと、無端帯状体１６の表面幅方向両端部に沿って搬送方向に向けて設けた一対のサイドプレートと、この各サイドプレートに取付けられたシール片６６を備え、この各シール片６６の下端部が板６０の表面及び突起部の内側面と隙間を有して対向してラビリンスタイプの上部シール機構を構成し、前記板６０の裏面幅方向両端部と隙間を置いて対向したガイド部材５８を設けたことを特徴とするコンベヤと無端帯状体のシール装置である。
【００１１】
第２の発明によれば、無端帯状体１６が水平に対して左右に斜めとなるとガイド部材５８に摺接して無端帯状体１６はほぼ水平状態で回転駆動する。
これによって、無端帯状体１６の表面幅方向両側部と一対のサイドプレートとの間をシール片６６でシールして搬送される粉粒物がこぼれ落ちたり、浮遊している粉粒物等が漏れることを確実に防止できる。
【００１２】
また、シール片６６の下端部が板６０の表面及び突起部の内側面と隙間を置いて対向してラビリンスタイプの上部シール機構を構成しているし、ガイド部材５８は板６０の裏面と隙間を置いて対向しているから、シール片６６、ガイド部材５８や板６０の表面、裏面が早期に摩耗することがなく耐久性が向上するし、無端帯状体１６の回転抵抗が大きくならないから、その駆動力を必要以上に大きくする必要がない。
【００１３】
第３の発明は、自走式車両の車体１前後中間部に設けた混合機３と、この車体１の前部寄りに設けられた原料土搬送装置７と、その上方に位置して設けた原料土ホッパ８及び改良材供給装置９を備え、原料土ホッパ８内の原料土を原料土搬送装置７で搬送し、その搬送された原料土の上に改良材供給装置９で改良材を供給し、その原料土と改良材を混合機３に投して解砕混合撹拌する自走式土質改良機において、
前記原料土搬送装置７を、幅方向両端部に表面よりも突出した突起部を備えた金属製の板６０を無端状に複数連結した金属チェーン製の無端帯状体１６の幅方向中央部のみを支持して回転動するものとし、
前記原料土ホッパ８の一対の縦板５２と改良材供給装置９の下部に設けた一対のシュート２１を無端帯状体１６の表面幅方向両端部に沿って搬送方向に向けて配設し、
この縦板５２、シュート２１にシール片６６を取付け、このシール片６６の下端部を板６０の表面及び突起部の内側面と隙間を有して対向させてラビリンスタイプの上部シール機構とし、前記板６０の裏面幅方向両端部と隙間を置いて対向したガイド部材５８を設けたことを特徴とする自走式土質改良機である。
【００１４】
第３の発明によれば、掘削した土砂などの原料土を土質改良して埋め戻しなどに再利用できるし、自走式車両の車体１に混合機３、原料土搬送装置７、原料土ホッパ８、改良材供給装置９を取付けたので自走して移動できる。
【００１５】
また、原料土搬送装置７の無端帯状体１６が水平に対して左右に斜めとなるとガイド部材５８に摺接して無端帯状体１６はほぼ水平状態で回転駆動する。
これによって、無端帯状体１６の表面幅方向両側部と原料土ホッパ８の縦板５２、シュート２１の間をシール片６６でシールして搬送される原料土や改良材がこぼれ落ちたり、浮遊している原料土、改良材等が漏れることを確実に防止できる。
【００１６】
また、シール片６６の下端部が板６０の表面及び突起部の内側面と隙間を置いて対向してラビリンスタイプの上部シール機構を構成しているし、ガイド部材５８は板６０の裏面と隙間を置いて対向しているから、シール片６６、ガイド部材５８や板６０の表面、裏面が早期に摩耗することがなく耐久性が向上するし、無端帯状体１６の回転抵抗が大きくならないから、その駆動力を必要以上に大きくする必要がない。
【００１９】
【発明の実施の形態】
（自走式土質改良機の全体構造）
図１と図２に示すように、車体１に左右の下部走行体２，２が取付けられて自走式車両としてある。車体１の前後中間部に混合機３が取付けてある。車体１の後部寄りにエンジン、油圧ポンプ、操作弁等の駆動装置４が取付けてあり、この駆動装置４はカバー５で覆われている。
【００２０】
前記車体１の前部寄りに取付用フレーム６が取付けてあり、この取付用フレーム６に原料土搬送装置７が前後方向に向けて取付けてある。前記取付用フレーム６の前部寄りに原料土ホッパ８、後部寄りに改良材供給装置９が前記原料土搬送装置７の上方に位置してそれぞれ取付けてある。
【００２１】
前記車体１の下部には改良土搬送装置１０が前後方向に向けて取付けてある。この改良土搬送装置１０の搬送方向一側部（前部寄り）は前記混合機３の下方に位置し、改良土搬送装置１０の搬送方向他側部（後部寄り）は車体１よりも後方に突出している。
【００２２】
前記混合機３は図３に示すように、ケース１１内にソイルカッタ１２と複数のインパクトハンマ１３を設けてある。
前記原料土搬送装置７は駆動輪１４と従動輪１５に無端帯状体１６を巻掛けたコンベヤとしてある。この原料土搬送装置７の排出端部は混合機３のケース１１の側壁１１ａに形成した投入口１７からケース１１内に突出している。
【００２３】
前記原料土ホッパ８の出口寄りにはロータ１８が設けてあり、原料土ａの切り出し高さｂを一定とする。前記切り出し高さｂとは原料土搬送装置７で改良材供給装置９に向けて搬送する原料土ａの高さである。
【００２４】
前記改良材供給装置９は改良材ホッパ１９の底部に定量供給機構２０を設け、その定量供給機構２０の排出側をシュート２１で原料土搬送装置７の無端帯状体１６の上面までガイドしている。前記改良材としてはセメント、セメント系固化剤、生石灰、消石灰、石灰系固化剤、発泡ビーズ等が用いられる。
【００２５】
（自走式土質改良機の動作）
図３に示すように、原料土ホッパ８に投入された掘削土砂等の原料土ａは原料土搬送装置７とロータ１８で一定の切り出し高さとして改良材供給装置９に向けて搬送され、その原料土ａの上に改良材が落下供給される。
【００２６】
混合機３のケース１１内まで搬送された原料土ａと改良材はソイルカッタ１２で切り落しされ、インパクトハンマ１３で解砕混合撹拌されて原料土ａの土質を改良し、その土質改良土ｃからケース１１の排出口２２から改良土搬送装置１０上に落下供給され、その改良土搬送装置１０で車体後方に搬送される。
【００２７】
前記改良材ホッパ１９に改良材を供給するには、図１に仮想線で示すように改良材を入れた袋２３を吊り上げ、蓋２４を開けて改良材ホッパ１９内に入れ、その袋２３の下部を破って袋２３を吊り上げることで供給する。袋２３を吊り上げるクレーン２５が車体１の左右一側部に旋回自在に取付けてある。
【００２８】
次に、原料土搬送装置７と原料土ホッパ８、シュート２１のシール装置について説明する。
図４に示すように、前記原料土搬送装置７の駆動輪１４、従動輪１５は横フレーム３０の長手方向両端部にそれぞれ取付けてあり、この横フレーム３０は取付用フレーム６の左右一対の前フレーム６ａ、後フレーム６ｂにブラケット３１でそれぞれ取付けてある。
【００２９】
前記無端帯状体１６は図５に示すように、ゴム製無端帯３２と芯金３３を備えたゴムベルトである。ゴム製無端帯３２は所定の厚さと幅と長さを有する無端状で、その表面３４は長手方向及び幅方向に亘って凹凸のない平坦面であり、表面３４の幅方向両端部には長手方向に連続した突起部３５がそれぞれ一体的に設けてある。表面３４の幅方向両端部以外の部分に凹凸を設けて搬送性を向上しても良い。
【００３０】
前記ゴム製無端帯３２の厚さは幅方向中央部３２ａが最も厚く、幅方向両端寄り部３２ｂが最も薄く、両者の中間部３２ｃが中間の厚さとなっている。ゴム製無端帯３２の幅方向中央部には裏面３６に開口した凹部３７が長手方向に間隔を置いて複数形成してあり、この凹部３７に前記駆動輪１４の歯部が嵌まり込んで芯金３３と噛合し、その凹部３７部分が駆動輪噛合部となっている。
【００３１】
前記芯金３３は鉄などの金属製の主芯金３８と鉄などの金属製の補助芯金３９を備え、主芯金３８はゴム製無端帯３２の幅よりも短かく、かつ長手方向中央寄りに一対の突片４０が長手方向に間隔を置いて備えている。この主芯金３８はゴム製無端帯３２の幅方向中央部の裏面３６側に埋設され、その一対の突片４０が裏面３６よりも突出している。
【００３２】
前記補助芯金３９はゴム製無端帯３２の幅と略同一幅で、ゴム製無端帯３２の表面３４側に埋設され、この補助芯金３９の下面３９ａにおける幅方向両端寄り部分はゴム製無端帯３２の最も薄い幅方向両端寄り部３２ｂの裏面よりも突出している。
【００３３】
前記ゴム製無端帯３２の主芯金３８と補助芯金３９との間にはスチールコード等の補強材４１が長手方向に連続して埋設されている。
【００３４】
前記横フレーム３０には複数のガイドローラ４２が長手方向に間隔を置いて取付けてあり、このガイドローラ４２に無端帯状体１６の一対の突片４０が接して幅方向中央部を支持している。このガイドローラ４２は前記ロータ１８と対向する部分において小さな間隔で取付けてあり、ロータ１８の回転により原料土ａが無端帯状体１６に強く押しつけられても変形しないようにしてある。
【００３５】
前記原料土ホッパ８は搬送方向一側縦板５０と他側縦板５１と一対の縦板５２，５２で平面形状矩形状の落下口５３を有し、その落下口５３は無端帯状体１６の幅よりも小さい。
【００３６】
前記原料土ホッパ８の一対の縦板５２と改良材供給装置９の一対のシュート２１とは連続してサイドプレートを形成している。前記各縦板５２と各シュート２１に連続してシール片５４がそれぞれ取付けてある。
【００３７】
前記シール片５４は図６と図７に示すように、上下方向の長穴５５を挿通したボルト５６で縦板５２、シュート２１の外面に取付けてあり、ボルト５６を弛めることでシール片５４を上下に移動して取付け高さを調整できる。
【００３８】
図７に示すように、前記シール片５４の下端面５４ａは無端帯状体１６のゴム製無端帯３２の表面３４と隙間を有して対向し、シール片５４の外側面５４ｂは無端帯状体１６のゴム製無端帯３２の突起部３５の内側面３５ａと隙間を有して対向している。これによって、無端帯状体１６の幅方向両側部とシール片５４との間にほぼＬ字状の隙間を形成し、ラビリンスタイプの上部シール機構を構成している。前記シール片５４はゴム、ＭＣナイロン等の合成樹脂製である。
【００３９】
前述のようであるから、無端帯状体１６で搬送される原料土は、シール片５４の下端面５４ａと無端帯状体１６の表面との間の隙間を通り、シール片５４の外側面５４ｂと突起部３５の内側面３５ａとの間を通って外部にこぼれようとするので、その原料土がこぼれ落ちることがないし、浮遊している原料土粉、改良材などが漏れることを防止できる。
【００４０】
また、シール片５４が無端帯状体１６に接触していないから、シール片５４の耐久性が向上する。
【００４１】
また、補助芯金３９がゴム製無端帯３２の幅方向全長に亘って埋設してあるから、幅方向両端寄り部の剛性が大で幅方向に湾曲変形し難くなる。また、ゴム製無端帯３２の幅方向両端部が突起部３５で補強されているから長手方向に湾曲変形し難くなる。これによって、ゴムベルト製の無端帯状体１６の幅方向両端寄り部が下向きに湾曲変形することがないし、長手方向に波形状に変形することがないので、シール片５４と突起部３５が上下方向に離れることがなく、原料土のこぼれ落ち、浮遊している原料土粉、改良材の漏れを確実に防止できる。
【００４２】
前記横フレーム３０の左右縦面にはブラケット５７を介して幅方向一対のガイド部材５８がそれぞれ取付けてある。この各ガイド部材５８は鉄などの金属製の基部プレート５８ａの上面に樹脂製の受けプレート５８ｂをビス等で取付けた形状で、その受けプレート５８ｂが無端帯状体１６の補助芯金３９の下面３９ａにおける幅方向両端部に隙間を置いて相対向している。前記ガイド部材５８は図４に示すように駆動輪１４と従動輪１５とに亘って連続している。
【００４３】
このようであるから、ゴムベルト製の無端帯状体１６が偏心荷重等によって水平に対して幅方向一方側に若干斜めとなると、補助芯金３９の下面３９ａにおける幅方向両端寄り部分がガイド部材５８の受けプレート５８ｂに摺接しながら回動するので、無端帯状体１６はほぼ水平として回動するから、無端帯状体１６の突起部３５とシール片５４が上下方向に外れることがない。
【００４４】
また、金属製の補助芯金３９の下面がガイド部材５８に摺接するので、ゴム製無端帯３２がガイド部材５８に摺接する場合と比べて摺動抵抗が小さく、無端帯状体１６の回動抵抗があまり大きくならないし、ガイド部材５８と摺接する部分が早期に摩耗せずに耐久性が向上する。
【００４５】
前記主芯金３８と補助芯金３９を一体として芯金３３としても良い。
【００４６】
前記シール片５４の下端面５４ａを図８（ａ）に示すようにゴム製無端帯３２の表面３４に接触しても良い。また、図８（ｂ）に示すようにゴム製無端帯３２の突起部３５に凹溝３５ｂを形成し、この凹溝３５ｂ内にシール片５４の下端部を隙間を置いて突出しても良い。また、図８（ｃ）に示すように、ゴム製無端帯３２の表面３４の幅方向両端寄りに凹溝３４ａを長手方向に連続して形成し、この凹溝３４ａ内にシール片５４の下端部を隙間を置いて突出しても良い。
【００４７】
次に本発明の第２の実施形態を説明する。
図９と図１０に示すように、無端帯状体１６は鉄等の金属製の板６０の裏面における幅方向中央寄りに一対のリンク６１を固着し、その複数の板６０をリンク６１相互間に筒体６２を設け、かつその筒体６３を挿通したピン６３で無端状に連結した金属製チェーンとしてある。例えば、履帯式走行装置の履板を複数連結した履帯としてある。
【００４８】
前記各板６０のリンク６１が従動輪１５、ガイドローラ４２に沿ってガイドされ、筒体６２に駆動輪１４の噛部が噛合するようにしてある。
【００４９】
前記各板６０の幅方向両端面には鉄などの金属製のプレート６４が固着してあり、このプレート６４は板６０の表面６５よりも突出して突起部としてある。図１０に示すように前記原料土ホッパ８の縦板５２、シュート２１の外面にシール片６６が第１の実施の形態と同様に上下移動調整可能に取付けてあり、このシール片６６は鉄などの金属製で、その下端部は幅方向外側に向けて弯曲し、図１１に示すように板６０の表面６５及びプレート６４の内面６４ａとの間に隙間を形成していると共に、このシール片６６の下部よりもプレート６４が突出し、ラビリンスタイプの上部シール機構を形成している。
【００５０】
ガイド部材５８は鉄などの金属製のプレートであり、金属製の板６０の裏面６７と隙間を置いて対向している。
【００５１】
このようであるから、前述の第１の実施形態と同様に原料土が無端帯状体１６の幅方向両端部からこぼれ落ちることを防止できるし、浮遊した原料土粉、改良材などが漏れることがない。しかも、無端帯状体１６が偏荷重などで水平に対して斜めになることをガイド部材５８で防止できる。
【００５２】
以上の各実施形態は自走式土質改良機の原料搬送装置７と原料土ホッパ８、シュート２１との間のシールについて述べたが、ゴムベルト製又は金属チェーン製で幅方向中央部を支持して回転動する無端帯状体１６を備え土砂、セメントなどの粉粒物を搬送するコンベヤにおいて、その無端帯状体１６の表面幅方向両側部に沿って一対のサイドプレートを設けて粉粒物がこぼれ落ちないようにした装置に適用できることは勿論である。
【００５３】
また、ガイド部材５８としてはローラ、円柱体、円筒など回転体を連続して配設したものとしても良い。
【図面の簡単な説明】
【図１】自走式土質改良機の側面図である。
【図２】自走式土質改良機の平面図である。
【図３】自走式土質改良機の動作説明図である。
【図４】原料土搬送装置と原料土ホッパと改良材供給装置部分の拡大側面図である。
【図５】無端帯状体の断面図である。
【図６】図４のＡ−Ａ断面図である。
【図７】図６のＢ部拡大図である。
【図８】ゴム製無端帯とシール片のシール部分の他の例を示す断面図である。
【図９】原料土搬送装置と原料土ホッパと改良材供給装置部分の第２の実施形態を示す拡大側面図である。
【図１０】図９のＣ−Ｃ断面図である。
【図１１】図１０のＤ部拡大図である。
【符号の説明】
１…車体
２…下部走行体
３…混合機
４…駆動装置
６…取付用フレーム
７…原料土供給装置
８…原料土ホッパ
９…改良材供給装置
１０…改良土搬送装置
１６…無端帯状体
１８…ロータ
２１…シュート
３０…横フレーム
３２…ゴム製無端帯
３３…芯金
３４…表面
３５…突起部
３５ａ…内側面
３６…裏面
３８…主芯金
３９…補助芯金
４２…ガイドローラ
５２…縦板
５３…落下口
５４…シール片
５４ａ…下端面
５７…ブラケット
５８…ガイド部材
６０…板
６１…リンク
６２…筒体
６３…ピン
６４…プレート（突起部）
６５…表面
６６…シール片。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a conveyor endless band sealing device for sealing between an endless belt and a side plate of a conveyor used for a device for sealing between a raw material soil transport device and a raw material soil hopper of a self-propelled soil improvement machine. And a self-propelled soil improvement machine.
[0002]
[Prior art]
In a conveyor that conveys particles such as earth and sand or cement, side plates are provided on both sides in the width direction of the conveyor so that the particles do not spill off from both sides in the width direction of the conveyor. There is a gap between the belt and the conveyor, and the granular material may spill out from the gap.
[0003]
In order to solve this problem, as shown in, for example, JP-A-6-115656, a rubber seal piece called a skirt belt is attached to a lower portion of the side plate, and this seal piece is connected to both sides in the width direction of the conveyor. A sealing device has been proposed.
[0004]
[Problems to be solved by the invention]
A conveyor is proposed in which an endless belt is wound around a driving wheel and a driven wheel, and the driving wheel drives the center in the width direction of the endless belt, and the driven wheel and guide rollers support the center in the width direction of the endless belt. Have been.
[0005]
Since this conveyor supports the center portion of the endless band in the width direction, the endless band may be displaced obliquely in the width direction with respect to the horizontal direction due to an uneven load or the like. When the body is displaced obliquely, a large gap is formed between one of the seal pieces and one side in the width direction of the endless band-shaped body, and the granular material may spill out from the large gap.
[0006]
Therefore, an object of the present invention is to provide a conveyor endless band-shaped sealing device and a self-propelled soil improvement machine which can solve the above-mentioned problems .
[0007]
Means for Solving the Problems and Functions and Effects
The first invention is an endless rubber belt made by embedding a plurality of metal cores 33 at longitudinal intervals in a rubber endless belt 32 having projections 35 continuous in the longitudinal direction at both ends in the width direction of a surface 34. A belt 16 is provided, and a conveyor that rotates only while supporting only the widthwise central portion of the endless belt 16 is provided in the conveying direction along both widthwise ends of the surface 34 of the rubber endless belt 32. A pair of side plates, and a seal piece 54 attached to each side plate ;
The lower end of each seal piece 54 faces the surface 34 of the rubber endless band 32 and the inner surface 35a of the protrusion 35 with a gap therebetween to constitute a labyrinth type upper seal mechanism,
A conveyor endless belt-shaped sealing device characterized in that a guide member 58 is provided facing both ends in the width direction of the back surface 36 of the rubber endless belt 32 with a gap therebetween.
[0008]
According to the first aspect of the invention, when the endless strip 16 is inclined left and right with respect to the horizontal, the endless strip 16 slides on the guide member 58 and is driven to rotate in a substantially horizontal state.
As a result, the granular material conveyed by sealing between the pair of side plates and both sides in the surface width direction of the endless belt-shaped body 16 spills out, or the floating granular material leaks. Can be reliably prevented.
[0009]
The lower end of the seal piece 54 faces the surface 34 of the endless rubber band 32 and the inner side surface 35a of the protrusion 35 with a gap therebetween to form a labyrinth-type upper seal mechanism. Since it is opposed to the back surface 36 of the rubber endless band 32 with a gap, the seal piece 54, the guide member 58, and the front surface 34 and the back surface 36 of the rubber endless band 32 are not worn out early, and the durability is improved. In addition, since the rotational resistance of the endless band 16 does not increase, it is not necessary to increase the driving force more than necessary.
[0010]
The second invention is an endless band 16 made of a metal chain in which a plurality of metal plates 60 having projections protruding from the surface at both ends in the width direction are connected endlessly, and the width of the endless band 16 is set. Conveyor that supports only the central portion in the direction of rotation, a pair of side plates provided in the conveying direction along both end portions in the surface width direction of the endless band-shaped body 16, and a seal piece attached to each side plate. A lower end portion of each of the sealing pieces 66 is opposed to the upper surface of the plate 60 and the inner surface of the projection with a gap therebetween to form a labyrinth-type upper sealing mechanism. A conveyer and an endless band-shaped sealing device provided with a guide member 58 facing a part and a gap.
[0011]
According to the second aspect of the invention, when the endless strip 16 is inclined left and right with respect to the horizontal, the endless strip 16 slides on the guide member 58 and is driven to rotate in a substantially horizontal state.
As a result, the granular material conveyed while being sealed between the pair of side plates and both sides in the surface width direction of the endless strip 16 is spilled or the floating granular material leaks. Can be reliably prevented.
[0012]
The lower end of the sealing piece 66 is opposed to the surface of the plate 60 and the inner surface of the projection with a gap therebetween to form a labyrinth-type upper sealing mechanism. Since the seal pieces 66, the guide members 58, and the front and back surfaces of the plate 60 are not worn out early, the durability is improved, and the rotational resistance of the endless band 16 does not increase. It is not necessary to increase the driving force more than necessary.
[0013]
According to a third aspect of the present invention, the mixer 3 is provided at an intermediate portion between the front and rear of the vehicle body 1 of the self-propelled vehicle, the raw material soil transfer device 7 provided near the front of the vehicle body 1, and provided above the vehicle. A raw material soil hopper 8 and an improving material supply device 9 are provided. The raw material soil in the raw material soil hopper 8 is transported by the raw material soil transport device 7, and the improving material is supplied by the improving material supply device 9 on the transported raw material soil. Then, in the self-propelled soil improvement machine in which the raw material soil and the improving material are thrown into the mixer 3 and crushed, mixed and stirred,
The raw material soil transfer device 7 is provided only at the center in the width direction of a metal chain endless band 16 in which a plurality of metal plates 60 having projections projecting from the surface at both ends in the width direction are connected endlessly. It shall rotate and support,
A pair of vertical plates 52 of the raw material soil hopper 8 and a pair of chutes 21 provided below the improving material supply device 9 are disposed along the surface width direction both ends of the endless strip 16 in the transport direction,
A seal piece 66 is attached to the vertical plate 52 and the chute 21, and the lower end of the seal piece 66 is opposed to the surface of the plate 60 and the inner side surface of the protrusion with a gap therebetween to form a labyrinth type upper seal mechanism. A self-propelled soil improvement machine characterized in that a guide member 58 is provided facing both ends in the width direction of the back surface of the plate 60 with a gap therebetween.
[0014]
According to the third aspect of the present invention, excavated soil such as earth and sand can be reused for backfilling by improving soil quality, etc., and the mixing machine 3, the material soil transport device 7, the material soil hopper can be mounted on the body 1 of the self-propelled vehicle 8. Since the improvement material supply device 9 is attached, the vehicle can move by itself.
[0015]
Further, when the endless strip 16 of the raw material soil transfer device 7 is inclined left and right with respect to the horizontal, the endless strip 16 slides on the guide member 58 and is driven to rotate in a substantially horizontal state.
As a result, the raw soil and the improved material conveyed by sealing between the both sides in the surface width direction of the endless strip 16 and the vertical plate 52 and the chute 21 of the raw soil hopper 8 with the sealing piece 66 spill or float. Leakage of raw material soil, improving material, etc. can be reliably prevented.
[0016]
The lower end of the sealing piece 66 is opposed to the surface of the plate 60 and the inner surface of the projection with a gap therebetween to form a labyrinth-type upper sealing mechanism. Since the seal pieces 66, the guide members 58, and the front and back surfaces of the plate 60 are not worn out early, the durability is improved, and the rotational resistance of the endless band 16 does not increase. It is not necessary to increase the driving force more than necessary.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
(Overall structure of self-propelled soil improvement machine)
As shown in FIGS. 1 and 2, a left and right lower traveling body 2, 2 is attached to a vehicle body 1 to form a self-propelled vehicle. A mixer 3 is attached to the front and rear middle part of the vehicle body 1. A driving device 4 such as an engine, a hydraulic pump, and an operation valve is mounted near a rear portion of the vehicle body 1, and the driving device 4 is covered with a cover 5.
[0020]
A mounting frame 6 is mounted near the front of the vehicle body 1, and a raw material soil transfer device 7 is mounted on the mounting frame 6 in the front-rear direction. A raw material soil hopper 8 is located near the front of the mounting frame 6 and an improving material supply device 9 is mounted near the rear of the raw material soil transporting device 7.
[0021]
An improved soil transport device 10 is attached to a lower portion of the vehicle body 1 in a front-rear direction. One side (forward) of the improved soil transport device 10 in the transport direction is located below the mixer 3, and the other side (rearward) of the improved soil transport device 10 in the transport direction is behind the vehicle body 1. It is protruding.
[0022]
As shown in FIG. 3, the mixer 3 is provided with a soil cutter 12 and a plurality of impact hammers 13 in a case 11.
The raw material soil conveying device 7 is a conveyor in which an endless belt 16 is wound around a driving wheel 14 and a driven wheel 15. The discharge end of the raw material soil transfer device 7 projects into the case 11 from an inlet 17 formed in the side wall 11 a of the case 11 of the mixer 3.
[0023]
A rotor 18 is provided near the outlet of the raw soil hopper 8, and the cutout height b of the raw soil a is made constant. The cut height b is the height of the raw material soil a transported by the raw material soil transport device 7 toward the improving material supply device 9.
[0024]
The improved material supply device 9 is provided with a fixed amount supply mechanism 20 at the bottom of the improved material hopper 19, and the discharge side of the fixed amount supply mechanism 20 is guided by a chute 21 to the upper surface of the endless strip 16 of the raw material soil transfer device 7. . As the improving material, cement, cement-based solidifying agent, quicklime, slaked lime, lime-based solidifying agent, foamed beads, and the like are used.
[0025]
(Operation of self-propelled soil improvement machine)
As shown in FIG. 3, the raw soil a such as excavated earth and sand put into the raw soil hopper 8 is transported toward the improving material supply device 9 as a constant cut height by the raw soil transport device 7 and the rotor 18. The improvement material is dropped and supplied onto the raw material soil a.
[0026]
The raw soil a and the improving material conveyed into the case 11 of the mixer 3 are cut off by the soil cutter 12, and crushed and mixed by the impact hammer 13 to improve the soil quality of the raw soil a. It is dropped and supplied from the discharge port 22 of the eleventh to the improved soil transport device 10, and is transported to the rear of the vehicle body by the improved soil transport device 10.
[0027]
In order to supply the improving material to the improving material hopper 19, a bag 23 containing the improving material is lifted up as shown by a phantom line in FIG. It is supplied by breaking the lower part and lifting the bag 23. A crane 25 for lifting the bag 23 is pivotally attached to one of the left and right sides of the vehicle body 1.
[0028]
Next, the sealing device for the raw material soil transfer device 7, the raw material soil hopper 8, and the chute 21 will be described.
As shown in FIG. 4, the drive wheel 14 and the driven wheel 15 of the raw material soil transfer device 7 are respectively mounted on both ends in the longitudinal direction of the horizontal frame 30. The bracket 31 is attached to the frame 6a and the rear frame 6b.
[0029]
As shown in FIG. 5, the endless band 16 is a rubber belt provided with a rubber endless band 32 and a core bar 33. The endless rubber band 32 has an endless shape having a predetermined thickness, width and length, and its surface 34 is a flat surface having no irregularities in the longitudinal direction and the width direction. The projections 35 continuous in the directions are provided integrally. Irregularities may be provided on portions other than both ends in the width direction of the surface 34 to improve transportability.
[0030]
The thickness of the rubber endless belt 32 is the thickest at the width direction central portion 32a, the thinnest at the width direction both end portions 32b, and the intermediate thickness 32c between the two. At the center in the width direction of the rubber endless belt 32, a plurality of recesses 37 opened on the back surface 36 are formed at intervals in the longitudinal direction, and the teeth of the driving wheel 14 are fitted into the recesses 37 so that the core is inserted. The recessed portion 37 is meshed with the gold 33 and forms a driving wheel meshing portion.
[0031]
The core bar 33 includes a main core bar 38 made of metal such as iron and an auxiliary core bar 39 made of metal such as iron. The main core bar 38 is shorter than the width of the rubber endless band 32 and has a center in the longitudinal direction. A pair of protruding pieces 40 are provided closer to each other in the longitudinal direction. The main metal core 38 is buried on the side of the rear surface 36 at the center in the width direction of the rubber endless belt 32, and a pair of projecting pieces 40 protrude from the rear surface 36.
[0032]
The auxiliary metal core 39 has substantially the same width as the width of the rubber endless band 32 and is embedded on the surface 34 side of the rubber endless band 32. A portion of the lower surface 39a of the auxiliary metal core 39 near both ends in the width direction is a rubber endless band. The band 32 protrudes from the rear surface of the thinnest end portion 32b in the width direction.
[0033]
A reinforcing material 41 such as a steel cord is continuously buried in the longitudinal direction between the main core bar 38 and the auxiliary core bar 39 of the rubber endless band 32.
[0034]
A plurality of guide rollers 42 are attached to the horizontal frame 30 at intervals in the longitudinal direction, and a pair of protruding pieces 40 of the endless strip 16 are in contact with the guide rollers 42 to support a central portion in the width direction. . The guide roller 42 is attached at a small interval in a portion facing the rotor 18 so that the material soil a is not deformed even if the raw material soil a is strongly pressed against the endless belt 16 by the rotation of the rotor 18.
[0035]
The raw material soil hopper 8 has a plane-shaped rectangular dropping port 53 formed by a vertical plate 50 on one side in the transport direction, a vertical plate 51 on the other side, and a pair of vertical plates 52, 52. Smaller than the width.
[0036]
The pair of vertical plates 52 of the raw material soil hopper 8 and the pair of chutes 21 of the improving material supply device 9 form a side plate continuously. A sealing piece 54 is attached to each of the vertical plates 52 and the chute 21 continuously.
[0037]
As shown in FIGS. 6 and 7, the seal piece 54 is attached to the outer surface of the vertical plate 52 and the chute 21 with bolts 56 inserted through the long holes 55 in the vertical direction. It can be moved up and down to adjust the mounting height.
[0038]
As shown in FIG. 7, the lower end surface 54a of the seal piece 54 faces the surface 34 of the rubber endless band 32 of the endless band 16 with a gap therebetween, and the outer surface 54b of the seal piece 54 has the endless band 16 The rubber endless belt 32 has an inner surface 35a of the projection 35 with a gap. As a result, a substantially L-shaped gap is formed between both end portions of the endless strip 16 in the width direction and the sealing piece 54, thereby forming a labyrinth-type upper sealing mechanism. The seal piece 54 is made of a synthetic resin such as rubber or MC nylon.
[0039]
As described above, the raw material soil conveyed by the endless strip 16 passes through the gap between the lower end face 54a of the seal strip 54 and the surface of the endless strip 16 and the outer surface 54b of the seal strip 54 and the protrusions. Since the material soil tends to spill outside through the space between the inner surface 35a of the portion 35, the material soil does not spill and the floating material soil powder, the improving material, and the like can be prevented from leaking.
[0040]
In addition, since the sealing piece 54 does not contact the endless strip 16, the durability of the sealing piece 54 is improved.
[0041]
Further, since the auxiliary core bar 39 is embedded over the entire length of the rubber endless band 32 in the width direction, the rigidity of the portion near both ends in the width direction is large, and it is difficult to bend and deform in the width direction. Further, since both end portions in the width direction of the endless belt 32 made of rubber are reinforced by the protruding portions 35, it is difficult to bend and deform in the longitudinal direction. As a result, the end portions in the width direction of the endless belt-like body 16 made of rubber belt do not bend downward and do not deform into a wavy shape in the longitudinal direction. It is possible to reliably prevent leakage of the raw material soil and floating of the raw material powder and the improving material without leaving.
[0042]
A pair of guide members 58 in the width direction are attached to the left and right vertical surfaces of the horizontal frame 30 via brackets 57, respectively. Each guide member 58 has a shape in which a resin-made receiving plate 58b is attached to the upper surface of a metal base plate 58a made of iron or the like with screws or the like. Are opposed to each other with a gap at both ends in the width direction. The guide member 58 is continuous over the drive wheel 14 and the driven wheel 15 as shown in FIG.
[0043]
Thus, when the endless belt-like body 16 made of a rubber belt is slightly inclined to one side in the width direction with respect to the horizontal due to an eccentric load or the like, a portion of the lower surface 39 a of the auxiliary core bar 39 near both ends in the width direction is formed by the guide member 58. Since the endless band 16 rotates while being in horizontal contact with the receiving plate 58b, the protrusion 35 of the endless band 16 and the sealing piece 54 do not come off in the vertical direction.
[0044]
Further, since the lower surface of the metal auxiliary core 39 slides on the guide member 58, the sliding resistance is smaller than when the rubber endless band 32 slides on the guide member 58, and the rotation resistance of the endless band 16 is reduced. Does not become too large, and the portion in sliding contact with the guide member 58 does not wear out early, and the durability is improved.
[0045]
The main mandrel 38 and the auxiliary mandrel 39 may be integrated into the mandrel 33.
[0046]
The lower end surface 54a of the seal piece 54 may be in contact with the surface 34 of the rubber endless band 32 as shown in FIG. Further, as shown in FIG. 8B, a concave groove 35b may be formed in the protrusion 35 of the rubber endless band 32, and the lower end of the seal piece 54 may be projected into the concave groove 35b with a gap. As shown in FIG. 8C, a concave groove 34a is formed continuously in the longitudinal direction near both ends in the width direction of the surface 34 of the rubber endless band 32, and the lower end of the seal piece 54 is formed in the concave groove 34a. The portion may be projected with a gap.
[0047]
Next, a second embodiment of the present invention will be described.
As shown in FIGS. 9 and 10, the endless strip 16 has a pair of links 61 fixed to the center in the width direction on the back surface of a metal plate 60 such as iron, and the plurality of plates 60 are placed between the links 61. It is a metal chain provided with a cylinder 62 and connected endlessly by a pin 63 inserted through the cylinder 63. For example, a crawler belt in which a plurality of crawler boards of a crawler-type traveling device are connected.
[0048]
The link 61 of each plate 60 is guided along the driven wheel 15 and the guide roller 42 so that the meshing portion of the drive wheel 14 meshes with the cylindrical body 62.
[0049]
A metal plate 64 made of iron or the like is fixed to both end surfaces in the width direction of each plate 60, and the plate 64 protrudes from the surface 65 of the plate 60 as a projection. As shown in FIG. 10, a seal piece 66 is attached to the vertical plate 52 of the raw material soil hopper 8 and the outer surface of the chute 21 so as to be vertically movable in the same manner as in the first embodiment. The lower end is curved outward in the width direction to form a gap between the surface 65 of the plate 60 and the inner surface 64a of the plate 64, as shown in FIG. The plate 64 protrudes from the lower part of 66 to form a labyrinth type upper seal mechanism.
[0050]
The guide member 58 is a metal plate such as iron, and faces the back surface 67 of the metal plate 60 with a gap.
[0051]
Because of this, it is possible to prevent the raw material soil from spilling from both ends in the width direction of the endless belt-like body 16 as in the first embodiment described above, and the floating raw material powder, the improving material, etc. may leak. Absent. In addition, the guide member 58 can prevent the endless belt-like body 16 from being inclined with respect to the horizontal due to an uneven load or the like.
[0052]
In the above embodiments, the seal between the raw material transport device 7 of the self-propelled soil improvement machine, the raw material soil hopper 8 and the chute 21 has been described. In a conveyor provided with a rotating endless strip 16 for conveying powdery material such as earth and sand, cement, etc., a pair of side plates are provided along both side portions in the surface width direction of the endless strip 16 so that powder and grain do not spill. Needless to say, the present invention can be applied to the apparatus described above.
[0053]
Further, as the guide member 58, a rotating body such as a roller, a columnar body, or a cylinder may be continuously provided.
[Brief description of the drawings]
FIG. 1 is a side view of a self-propelled soil improvement machine.
FIG. 2 is a plan view of the self-propelled soil improvement machine.
FIG. 3 is an operation explanatory view of the self-propelled soil improvement machine.
FIG. 4 is an enlarged side view of a raw material soil transport device, a raw material soil hopper, and an improvement material supply device.
FIG. 5 is a cross-sectional view of the endless band-shaped body.
FIG. 6 is a sectional view taken along line AA of FIG. 4;
FIG. 7 is an enlarged view of a portion B in FIG. 6;
FIG. 8 is a cross-sectional view showing another example of a rubber endless band and a seal portion of a seal piece.
FIG. 9 is an enlarged side view showing a second embodiment of the raw material soil transport device, the raw material soil hopper, and the improving material supply device portion.
FIG. 10 is a sectional view taken along the line CC of FIG. 9;
FIG. 11 is an enlarged view of a portion D in FIG. 10;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Body 2 ... Lower traveling body 3 ... Mixer 4 ... Driving device 6 ... Mounting frame 7 ... Raw material soil supply device 8 ... Raw material soil hopper 9 ... Improved material supply device 10 ... Improved soil transport device 16 ... Endless belt-like body 18 ... Rotor 21 ... Chute 30 ... Horizontal frame 32 ... Rubber endless band 33 ... Core 34 ... Surface 35 ... Protrusion 35a ... Inner side 36 ... Back 38 ... Main core 39 ... Auxiliary core 42 ... Guide roller 52 ... Vertical Plate 53 Falling port 54 Seal piece 54a Lower end face 57 Bracket 58 Guide member 60 Plate 61 Link 62 Tube 63 Pin 64 Plate (projection)
65: Surface 66: Seal piece.

Claims

A rubber belt in which a plurality of metal cores (33) are embedded in a rubber endless band (32) having protrusions (35) continuous in the longitudinal direction at both ends in the width direction of the surface (34) at intervals in the longitudinal direction. A conveyor that rotates only while supporting only the widthwise center of the endless band (16), and both ends in the width direction of the surface (34) of the rubber endless band (32). And a pair of side plates provided in the transport direction along with a seal piece (54) attached to each side plate .
The lower end of each of the seal pieces (54) faces the surface (34) of the endless rubber band (32) and the inner surface (35a) of the projection (35) with a gap therebetween to form a labyrinth type upper seal mechanism. Make up,
A conveyor endless band-shaped body sealing device, comprising a guide member (58) opposed to both ends in the width direction of the back surface (36) of the rubber endless band (32) with a gap therebetween.

Width plurality linked metal chain made of an endless strip metal plate having a protruding portion protruding from the surface (60) in an endless manner in the opposite end portions and (16), an endless belt-like body made of the metal chain ( 16) A conveyor that rotates only while supporting only the center portion in the width direction, a pair of side plates provided in the conveying direction along both end portions in the surface width direction of the endless belt-like body (16), and each side plate A sealing piece (66) attached to the
The lower end of each of the sealing pieces (66) is opposed to the surface of each plate (60) and the inner surface of the projection with a gap therebetween to constitute a labyrinth-type upper sealing mechanism.
A conveyor endless belt-shaped sealing device, comprising a guide member (58) opposed to both ends in the width direction of the back surface of the plate (60) with a gap therebetween.

A mixing machine (3) provided in the front and rear intermediate portion of a vehicle body (1) of a self-propelled vehicle, a raw material soil transfer device (7) provided near a front portion of the vehicle body (1), and The raw material soil hopper (8) and the improving material supply device (9) are provided, and the raw material soil in the raw material soil hopper (8) is transported by the raw material soil transport device (7). In a self-propelled soil improvement machine which supplies an improvement material with an improvement material supply device (9), throws the raw material soil and the improvement material into a mixer (3), and crushes, mixes and agitates the material.
An endless belt-like body (16) made of a metal chain in which a plurality of metal plates (60) each having a protrusion protruding from the surface at both ends in the width direction are connected endlessly to the raw material soil transfer device (7). It shall rotate only while supporting only the center part in the width direction,
A pair of vertical plates (52) of the raw material soil hopper (8) and a pair of chutes (21) provided below the improving material supply device (9) are placed along both ends in the surface width direction of the endless strip (16). Arranged in the transport direction,
A seal piece (66) is attached to the vertical plate (52) and the chute (21), and the lower end of the seal piece (66) is opposed to the surface of the plate (60) and the inner surface of the projection with a gap. With a labyrinth type upper seal mechanism,
A self-propelled soil improvement machine, wherein a guide member (58) is provided facing both ends in the width direction of the back surface of the plate (60) with a gap therebetween.