JP3677435B2 - Sediment modifier supply device for sediment modifier - Google Patents

Sediment modifier supply device for sediment modifier Download PDF

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Publication number
JP3677435B2
JP3677435B2 JP2000185600A JP2000185600A JP3677435B2 JP 3677435 B2 JP3677435 B2 JP 3677435B2 JP 2000185600 A JP2000185600 A JP 2000185600A JP 2000185600 A JP2000185600 A JP 2000185600A JP 3677435 B2 JP3677435 B2 JP 3677435B2
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Prior art keywords
earth
sand
modifier
sediment
supply device
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JP2000185600A
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Japanese (ja)
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JP2002004328A (en
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廣喜 板谷
一雅 澤
務 長崎
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Hitachi Construction Machinery Co Ltd
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Hitachi Construction Machinery Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、上下水道やガス等の管、電気や電話等のケーブルを埋設又は修理のために路面等を掘削した際に出る掘削土砂や、トンネル工事の際の掘削土砂等これら掘削工事によって掘削された掘削土砂に石灰やセメント等の土砂改質材を添加し撹拌して掘削土砂を改質し、再び埋め戻し材として利用するための改良土を製造する土砂改質装置の土砂改質材供給装置に関するものである。
【0002】
【従来の技術】
従来より建設残土と称される上下水道やガス等の管、電気や電話等のケーブルを埋設又は修理のために路面等を掘削した際に出る掘削土砂やトンネル工事の際の掘削土砂等は、建設残土として多量に発生している。これらの建設残土は、従来はそのままその作業現場の近くの山間部あるいは比較的近接した海辺に搬送して埋めたりして処理していた。
【0003】
しかし、これら埋め立てに適した場所を確保することが近年難しくなってきており、遠くの場所に建設残土を搬送するに要する費用も多額の費用を要し、また、例え場所的に確保できたとしても埋め立てに対する環境面での規制もあり、建設残土を従来のようにただ単に山間部や海辺に搬送して埋めたてることも困難である。
【0004】
建設残土を掘削作業現場において、オンサイトで埋め立て処理することが可能であればよいが、一度掘削された建設残土には、砂利やヘドロ、アスファルト片、岩片、コンクリート片等が混在していたり、また、埋め戻し材として利用するには土としての粒径が不揃いであると共に各土粒間の粘結力も劣化しており、これを路床の掘削溝の埋め立て土砂として再利用しても地盤としての必要な支持力を得るのが難しい。
【0005】
このため、作業現場で発生した掘削土砂をそのまま埋め立てるための土砂として利用することはできないため、埋め立てに必要な良質な土砂を新たに購入・搬入して埋め立て土砂として利用している。
【0006】
しかしながら、このように一度掘削して建設残土として発生した掘削土砂もただ捨ててしまえば単なる廃棄物にすぎないが、これを改質処理をすることにより再度資材(埋め戻し土)として有効に利用することができる。その装置として掘削土砂に石灰やセメント等の土砂改質材を添加して掘削土砂を改質するための土質改良装置が種々知られている。
【0007】
そして、従来の土質改良装置は、図6、7に図示されているように、篩装置1と土砂改質材供給装置4と混合撹拌装置3とから構成されている。更に、篩装置1によって一定の大きさ以下となった篩下の掘削土砂を混合撹拌装置3に搬送供給するためのベルトコンベア2が配置されており、混合撹拌装置3の上部には、石灰やセメント等の土砂改質材を投入供給する土砂改質材供給装置4が設けられている。そして、混合撹拌装置3の下部には、掘削土砂と土砂改質材とが混合撹拌された再度資材として排出された改質土がベルトコンベア5の上に排出されて、ストックヤード6に搬送堆積され、改質再生された埋め立て用の土砂として利用される。
【0008】
そして、従来の土砂改質装置の混合撹拌装置3に土砂改質材を投入供給する土砂改質材供給装置4は、周壁部7と、周壁部7の土砂改質材排出部8に土砂改質材排出用のシュート10と、また周壁部7の上部には土砂改質材が供給される土砂改質材供給口9とが設けられている。
【0009】
土砂改質材供給装置4の土砂改質材排出部8に設けられたシュート10には土砂改質材を排出するスクリューコンベア12が設けられており、また、土砂改質材供給装置4の土砂改質材排出部8寄りには、土砂改質材供給装置4に供給された土砂改質材を撹拌するための撹拌用スクリューコンベア11が設けられている。この2つのスクリューコンベア12と撹拌用スクリューコンベア11は回転駆動用のモータ14及び13によって回転駆動されている。
【0010】
そして、この2つのスクリューコンベア12と撹拌用スクリューコンベア11の間には、シャッター装置15が設けられており、このシャッター装置15の開閉によって土砂改質材排出部8に設けられたシュート10から土砂改質材を混合撹拌装置3に送り込んだり又は停止したりすることができる。
【0011】
【発明が解決しようとする課題】
しかしながら、従来の土砂改質材供給装置4に上方の土砂改質材供給口9から土砂改質材が供給されると、土砂改質材供給装置4の土砂改質材排出部8はシュート10に向けて絞られて形状であるので、排出するスクリューコンベア12を作動していても、その上方に所謂ブリッジ現象を生じてスクリューコンベア12の上方に空洞部を生じ、シュート10から土砂改質材を混合撹拌装置3に供給することができなくなってしまう。すると、改質すべき掘削土砂に、改質に必要な量の土砂改質材が添加されず、埋め戻し土として再利用可能な性能を発揮できないものとなってしまう。
【0012】
また、土砂改質材供給装置4のシュート10からの土砂改質材の送り出しを排出用のスクリューコンベア12によって行ない、供給、停止をこの排出用のスクリューコンベア12の上方に設けたシャッター装置15で行っているが、排出用のスクリューコンベア12は、該スクリューコンベア12に供給された土砂改質材の送り出し量を回転数によって調整できるものの、シャッター装置15を経て供給される土砂改質材の量が変化するとスクリューコンベア12による送り出し量も変化してしまうため、土砂改質材の混合撹拌装置3への供給量を調整しようとすると、シャッター装置15の開閉量とスクリューコンベア12の回転数とを共に調整する必要があり、供給量を微調整することが実質困難であった。
【0013】
そこで、本発明は上述した課題によりなされたもので、土砂改質材供給装置の底部のシュートの排出口に給電される電源の周波数により下方−前方−上方−後方と作動する電磁ソレノイド振動フィーダを取付けることで、従来の土砂改質材供給装置に設けていたシャッター装置を不要とし、この電磁ソレノイド振動フィーダを電磁サイクルの調整によって土砂改質材の排出量を簡単に微調整することができ、これにより改質すべき掘削土砂の状態と改良土の用途に対応して添加する土砂改質材の添加量を細かく調整することができるようにした土砂改質材供給装置を提供することを目的とする。
【0014】
また、土砂改質材供給装置の内部に掘削土砂と土砂改質材とを混合撹拌するため、一端部に前記回転軸の回転により前記回転軸に振動を付加する偏心錘を付設した撹拌羽根を有する撹拌用スクリューコンベアを設けたので、撹拌羽根を備えた回転軸に振動を付加し、土砂改質材に刺激を与え、土砂改質材がブリッジ現象により排出が途切れることなくスムースに排出できるようにした土砂改質材供給装置を提供することを目的とする。
【0015】
【課題を解決するための手段】
上記の目的を達成するため、本発明の請求項1に記載の発明は、土砂改質装置の土砂改質材供給装置において、前記土砂改質材供給装置の底部の排出口に改質材供給量調整手段として、給電される電源の周波数により下方−前方−上方−後方と作動する電磁ソレノイド振動フィーダを設け、該電磁ソレノイド振動フィーダの電磁ソレノイドに印加する給電量を加減調整して給電することにより前記排出口からの土砂改質材の供給量を調整可能としたことを特徴とするものである。
【0016】
また、上記の目的を達成するため、本発明の請求項2に記載の発明は、土砂改質材供給装置の内部に、投入された土砂改質材を撹拌するため、撹拌羽根が設けられた回転軸をモータによって回転駆動されるように設け、該撹拌羽根の一端部に前記回転軸の回転により前記回転軸に振動を付加する偏心錘を付設したことを特徴とするものである。
【0017】
【発明の実施の形態】
以下、本発明の土砂改質装置の土砂改質材供給装置の実施の形態を図面によって説明する。図1は、本発明の土砂改質材供給装置の縦断面概略図、図2は、本発明の土砂改質材供給装置のシュート排出口の断面拡大図、図3、4、5は、図2のシュート排出口に設けた電磁ソレノイド振動フィーダの作動状態図である。
【0018】
本発明の土砂改質装置の全体について説明すると、先に図6で説明した従来の土砂改質装置と同様、本発明の土砂改質装置は、篩装置1と土砂改質材供給装置4と混合撹拌装置3とからなっている。そして更に、篩装置1の下方から混合撹拌装置3の上部に亘って、篩装置1の破砕装置によって破砕し篩装置によって一定の大きさ以下となった篩下の掘削土砂を混合撹拌装置3に搬送供給するためのベルトコンベア2が配置されており、そして、混合撹拌装置3の下部には、掘削土砂と土砂改質材とが混合撹拌された再度資材として排出された改質土がベルトコンベア5の上に排出されて、ストックヤード6に搬送堆積され、路床等の掘削溝の改質再生された埋め立て土砂としての再利用される。
【0019】
次に、本発明の土砂改質装置の土砂改質材供給装置について図1、2、3、4、5により説明すると、符号4は土砂改質材供給装置で、上部、下部がそれぞれ開口し下部が錘状に絞られた角筒状または円筒状に形成され、これら角筒状または円筒状の筒状体を形成する周壁部7の上部開口部は、土砂改質材が供給される土砂改質材供給口9を形成し、下部開口部は、土砂改質材が排出される土砂改質材排出部8を形成する。そして、土砂改質材排出部8の上部には、筒状の周壁部7の幅方向に掛け渡される湾曲アーム状の攪拌羽根を備えた回転軸16が設けられており、この攪拌羽根の一端部には、前記回転軸の回転により前記回転軸に振動を付加する偏心錘18が付設しており、該回転軸16はモータ17によって回転駆動される。
【0020】
一方土砂改質材供給装置4の土砂改質材排出部8には、該排出部8の開口縁部81、82に密着する状態で電磁ソレノイド振動フィーダ部20が取付けられている。符号19は電磁ソレノイド振動フィーダ部20を作動する電磁ソレノイド部である。
【0021】
電磁ソレノイド振動フィーダ部20は、芯部22が被覆ゴム21によって被覆されて構成されており、電磁ソレノイド振動フィーダ部20の芯部22は電磁ソレノイド部19にアーム部材23を介して取付けられている。電磁ソレノイド部19への電源がオフの時には、電磁ソレノイド振動フィーダ部20は、土砂改質材供給装置4の土砂改質材排出部8の開口縁部81、82に密着し、該排出部8の排出口を閉塞している。
【0022】
次に、電源のオンにより電磁ソレノイド部19は作動して、電磁ソレノイド振動フィーダ部20は、電磁ソレノイド部19のアーム部材23により土砂改質材供給装置4の開口縁部82から隙間a分だけ下方に下げられる(図3の記載参照)。そして、電磁ソレノイド振動フィーダ部20は隙間a分だけ下方に下げられた状態で隙間b分だけ前方に押し出され、この時電磁ソレノイド振動フィーダ部20の上に載っている土砂改質材は前記隙間aから排出される(図4の記載参照)。そして更に、電磁ソレノイド振動フィーダ部20は隙間a分だけ上方に上げられ土砂改質材供給装置4の開口縁部82と密着(図5の記載参照)し、土砂改質材供給装置4の排出口を閉塞し、次に、電磁ソレノイド振動フィーダ部20は隙間b分だけ後方に引かれて図2の状態に戻る。
【0023】
そして、このようなサイクルを高速で繰り返しながら土砂改質材を前記隙間aから排出する。なお、電磁ソレノイド振動フィーダ部20の振動サイクルは、電磁ソレノイド部19への電源の周波数を加減調整することによって任意の振動サイクルを得ることができる。
【0024】
次に、本発明の土砂改質材供給装置4の機能について説明すると、モータ17によって撹拌羽根を備えた回転軸16は回転駆動され、この回転軸16の撹拌羽根の回転によって土砂改質材供給装置4の内部に収容されている土砂改質材は撹拌されるが、撹拌羽根を備えた回転軸16の撹拌羽根の一端部に前記回転軸の回転により前記回転軸に振動を付加する偏心錘18が付設されているので、撹拌羽根を備えた回転軸16は偏心錘18が付設されていない場合に比して、振幅幅を大きく偏心振動させながら回転し、土砂改質材供給装置4の内部に収容されている土砂改質材を撹拌し、土砂改質材供給装置4の内部で土砂改質材がブリッジ現象を生じることなく下方に送くることができる。
【0025】
また、撹拌羽根を備えた回転軸16の偏心振動が土砂改質材供給装置4の周壁部7にも伝えられ、土砂改質材供給装置4の全体に振動が付加されるので土砂改質材供給装置4を揺さぶることになり、土砂改質材供給装置4の内部の土砂改質材が更に下方への送りがより促進される。
【0026】
また、土砂改質材供給装置4の土砂改質材排出部8の排出口に送られてきた土砂改質材は、該排出口を閉塞している電磁ソレノイド振動フィーダ部20によって混合撹拌装置3に供給されることはないが、該排出口を閉塞している電磁ソレノイド振動フィーダ部20の電磁ソレノイド部19へ給電することにより、電磁ソレノイド振動フィーダ部20は作動し、この電磁ソレノイド振動フィーダ部20の下方−前方−上方−後方への振動サイクルに応じて、土砂改質材は、電磁ソレノイド振動フィーダ部20と土砂改質材供給装置4の開口縁部82との隙間aから混合撹拌装置3に供給されて、混合撹拌装置3で篩装置1から搬入される掘削土砂と混合撹拌される。
【0027】
土砂改質材供給装置4からの土砂改質材の供給量は、前記下方への隙間a分と前方への隙間b分とによって左右され、このサイクルは電磁ソレノイド部19への電源の周波数によって決定されるので、電源の周波数を加減調整することにより、改質すべき掘削土砂の状態と改良土の用途に対応して添加する土砂改質材の添加量をきめ細かく調整することができる。また、土砂改質材供給装置の底部の排出口に電磁ソレノイド振動フィーダを取付けているので、従来の土砂改質材供給装置に設けていたシャッター装置が不要となる。
【0028】
【発明の効果】
以上説明したように、本発明の土砂改質材供給装置は、土砂改質材供給装置の底部のシュートの排出口に給電される電源の周波数により下方−前方−上方−後方と作動する電磁ソレノイド振動フィーダを取付け、この電磁ソレノイド振動フィーダを電磁サイクルの調整によって土砂改質材の排出量を簡単に微調整することができ、これにより改質すべき掘削土砂の状態と改良土の用途に対応して添加する土砂改質材の添加量を細かく調整することができるようにし、従来の土砂改質材供給装置に設けていたシャッター装置を不要とすることができると云う効果を奏することができる。
【0029】
また、土砂改質材供給装置の内部に、一端部に前記回転軸の回転により前記回転軸に振動を付加する偏心錘を付設した撹拌羽根を備えた回転軸を設けたので該回転軸に振動を付加し、これによって土砂改質材供給装置自体に振動を与え、土砂改質材供給装置の内部に収容されている土砂改質材を撹拌すると共に、土砂改質材供給装置4の内部で土砂改質材がブリッジ現象を生じることなく下方に送ることができると云う効果を奏することができる。
【図面の簡単な説明】
【図1】本発明の土砂改質材供給装置の縦断面概略図、
【図2】本発明の土砂改質材供給装置のシュート排出口の断面拡大図、
【図3】図2のシュート排出口に設けた電磁ソレノイド振動フィーダの作動状態図
【図4】図2のシュート排出口に設けた電磁ソレノイド振動フィーダの作動状態図
【図5】図2のシュート排出口に設けた電磁ソレノイド振動フィーダの作動状態図、
【図6】土砂改質装置の側面配置図、
【図7】従来の土砂改質材供給装置の縦断面概略図。
【符号の説明】
1 篩装置、 2 ベルトコンベア、 3 混合撹拌装置、 4 土砂改質材供給装置、
5 ベルトコンベア、 6 ストックヤード、 7 周壁部、 8 土砂改質材排出部、
81 開口縁部、 82 開口縁部、 9 土砂改質材供給口、 10 シュート、
11 撹拌用スクリューコンベア、 12 スクリューコンベア、 13 モータ、
14 モータ、 15 シャッター装置、 16 撹拌羽根を備えた回転軸、
17 モータ、 18 偏心錘、 19 電磁ソレノイド部、
20 電磁ソレノイド振動フィーダ部、 21 被覆ゴム、
22 振動フィーダ部の芯部、 23 アーム部材。
[0001]
BACKGROUND OF THE INVENTION
The present invention excavates by excavation such as excavation earth and sand when excavating the road surface for embedding or repairing pipes such as water and sewage and gas, electricity and telephone etc., and excavation earth and sand at the time of tunnel construction. Sediment modifiers for landslide reformers that add lime, cement, or other sediment modifiers to the excavated sediments, stir them to modify the excavated sediments, and produce improved soil for use as backfill materials again The present invention relates to a supply device.
[0002]
[Prior art]
Excavation earth and sand, etc. that come out when excavating road surfaces etc. for embedding or repairing pipes such as water and sewage, gas, etc., which are conventionally called construction residual soil, etc. A large amount of construction waste is generated. Conventionally, these construction surplus soils have been processed by being transported and buried in mountainous areas near the work site or relatively close seaside.
[0003]
However, it has become difficult in recent years to secure a suitable site for landfill, and the cost required to transport the construction surplus soil to a distant place also requires a large amount of money. However, due to environmental restrictions on landfills, it is difficult to simply transport the construction surplus soil to the mountains and the seaside as before.
[0004]
It is only necessary that the construction surplus soil can be landfilled on-site at the excavation work site, but once construction has been excavated, gravel, sludge, asphalt fragments, rock fragments, concrete fragments, etc. are mixed, In addition, when used as a backfill material, the particle size of the soil is uneven and the cohesion between the soil particles is degraded, and even if this is reused as the reclaimed soil for excavation grooves in the roadbed, It is difficult to obtain the necessary support force.
[0005]
For this reason, since excavated sediment generated at the work site cannot be used as it is for reclaimed land, high-quality sediment required for landfill is newly purchased and carried and used as reclaimed soil.
[0006]
However, if the excavated sediment generated as excavated soil after construction is simply discarded, it is just a waste, but it can be effectively reused as material (backfill soil) by reforming it. can do. As the apparatus, various soil quality improvement apparatuses for modifying excavated sediment by adding sediment modifiers such as lime and cement to the excavated sediment are known.
[0007]
And the conventional soil improvement apparatus is comprised from the sieve apparatus 1, the earth and sand modifier supply apparatus 4, and the mixing stirring apparatus 3 as FIG. Furthermore, a belt conveyor 2 for conveying and supplying the excavated earth and sand below the fixed size by the sieving device 1 to the mixing and stirring device 3 is disposed. An earth and sand modifier supply device 4 for supplying and supplying an earth and sand modifier such as cement is provided. In the lower part of the mixing and agitating device 3, the modified soil discharged again as a material after mixing and stirring the excavated sediment and the sediment modifying material is discharged onto the belt conveyor 5 and conveyed to the stock yard 6. It is used as landfill for reclaimed land that has been reformed and regenerated.
[0008]
Then, the earth and sand modifier supply device 4 that supplies and supplies the earth and sand modifier to the mixing and agitating device 3 of the conventional earth and sand reformer is provided with a sand and sand improvement material in the peripheral wall portion 7 and the earth and sand modifier discharge portion 8 of the peripheral wall portion 7. A chute 10 for discharging the material is provided, and an upper part of the peripheral wall 7 is provided with an earth and sand modifier supply port 9 through which an earth and sand modifier is supplied.
[0009]
The chute 10 provided in the earth and sand modifier supply unit 8 of the earth and sand modifier supply device 4 is provided with a screw conveyor 12 that discharges the earth and sand modifier. Agitating screw conveyor 11 for agitating the sediment modifier supplied to the sediment modifier 4 is provided near the modifier discharger 8. The two screw conveyors 12 and the stirring screw conveyor 11 are rotationally driven by rotational drive motors 14 and 13.
[0010]
A shutter device 15 is provided between the two screw conveyors 12 and the agitating screw conveyor 11, and the earth and sand are removed from the chute 10 provided in the earth and sand modifier discharging unit 8 by opening and closing the shutter device 15. The modifying material can be sent to the mixing and stirring device 3 or stopped.
[0011]
[Problems to be solved by the invention]
However, when the earth and sand modifier is supplied from the upper earth and sand modifier supply port 9 to the conventional earth and sand modifier supply device 4, the earth and sand modifier discharge unit 8 of the earth and sand modifier supply device 4 is used as the chute 10. Therefore, even when the screw conveyor 12 to be discharged is operated, a so-called bridge phenomenon is generated above the screw conveyor 12 to form a hollow portion above the screw conveyor 12, and the earth and sand modifier is generated from the chute 10. Cannot be supplied to the mixing and stirring device 3. Then, the amount of earth and sand modifier necessary for the reforming is not added to the excavated earth and sand to be reformed, and performance that can be reused as backfill soil cannot be exhibited.
[0012]
Further, the earth and sand modifier is fed from the chute 10 of the earth and sand modifier supply device 4 by the discharging screw conveyor 12, and is supplied and stopped by a shutter device 15 provided above the discharging screw conveyor 12. Although the discharging screw conveyor 12 can adjust the feed amount of the earth and sand modifier supplied to the screw conveyor 12 according to the number of rotations, the amount of the earth and sand modifier supplied via the shutter device 15. Since the amount of feed by the screw conveyor 12 also changes, the amount of opening / closing of the shutter device 15 and the number of rotations of the screw conveyor 12 are determined when the supply amount of the earth and sand modifier to the mixing and stirring device 3 is adjusted. It was necessary to adjust both, and it was practically difficult to finely adjust the supply amount.
[0013]
Therefore, the present invention has been made in accordance with the above-described problem, and an electromagnetic solenoid vibrating feeder that operates downward-front-upper-rear by the frequency of the power supplied to the discharge port of the chute at the bottom of the sediment modifier supply device is provided. By installing it, the shutter device that was provided in the conventional sediment modifier supply device is unnecessary, and this electromagnetic solenoid vibration feeder can easily finely adjust the discharge amount of sediment modifier by adjusting the electromagnetic cycle, It is an object of the present invention to provide a sediment modifier supply device that can finely adjust the amount of the sediment modifier added depending on the state of the excavated sediment to be modified and the use of the improved soil. To do.
[0014]
Also, in order to mix and agitate the excavated sediment and the sediment modifier in the interior of the sediment modifier supply device, an agitating blade provided with an eccentric weight that adds vibration to the rotary shaft by the rotation of the rotary shaft is provided at one end. Since the screw conveyor for stirring is provided, vibration is added to the rotating shaft with stirring blades to stimulate the sediment modifier so that the sediment modifier can be discharged smoothly without interruption due to the bridge phenomenon. An object of the present invention is to provide an earth and sand modifier supply device.
[0015]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 of the present invention is the earth and sand modifier supply device of the earth and sand reformer, wherein the modifier is supplied to the outlet of the bottom of the earth and sand modifier supply device. As an amount adjusting means , an electromagnetic solenoid vibration feeder that operates downward-front-upward-rearward according to the frequency of a power supply to be supplied is provided, and the amount of power supplied to the electromagnetic solenoid of the electromagnetic solenoid vibration feeder is adjusted to adjust the power supply. Thus, it is possible to adjust the supply amount of the sediment modifier from the discharge port.
[0016]
Further, in order to achieve the above object, the invention according to claim 2 of the present invention is provided with a stirring blade in the earth and sand modifier supply device for stirring the introduced earth and sand modifier. A rotating shaft is provided to be driven to rotate by a motor, and an eccentric weight that adds vibration to the rotating shaft by rotation of the rotating shaft is provided at one end of the stirring blade.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a sediment modifier supply device of a sediment modifier of the present invention will be described with reference to the drawings. FIG. 1 is a schematic longitudinal sectional view of the earth and sand modifier supply device of the present invention, FIG. 2 is an enlarged sectional view of a chute discharge port of the earth and sand modifier supply device of the present invention, and FIGS. It is an operation state figure of the electromagnetic solenoid vibration feeder provided in the chute discharge opening of 2.
[0018]
The entire earth and sand reforming apparatus of the present invention will be described. Like the conventional earth and sand reforming apparatus described above with reference to FIG. 6, the earth and sand reforming apparatus of the present invention includes a sieve device 1, an earth and sand reforming material supply device 4, and It consists of a mixing and stirring device 3. Further, the excavated sediment under the sieve that has been crushed by the crushing device of the sieving device 1 and reduced to a certain size or less by the sieving device from below the sieving device 1 to the mixing agitating device 3 A belt conveyor 2 for conveying and supplying is disposed, and in the lower part of the mixing and stirring device 3, the modified soil discharged again as a material obtained by mixing and stirring the excavated sediment and the soil modifying material is a belt conveyor. 5 is discharged onto the stock yard, transported and accumulated in the stock yard 6, and reused as reclaimed landfill that has been modified and regenerated in excavation grooves such as roadbeds.
[0019]
Next, the earth and sand modifier supply device of the earth and sand reformer of the present invention will be described with reference to FIGS. 1, 2, 3, 4 and 5. Reference numeral 4 is an earth and sand modifier supply device, and the upper part and the lower part are opened. The lower opening is formed in a square tube shape or a cylindrical shape that is constricted in a weight shape, and the upper opening portion of the peripheral wall portion 7 that forms the rectangular tube shape or the cylindrical tube body is earth and sand to which the earth and sand modifier is supplied. The reformer supply port 9 is formed, and the lower opening portion forms a sediment modifier discharge portion 8 from which the sediment modifier is discharged. A rotating shaft 16 having a curved arm-shaped stirring blade spanned in the width direction of the cylindrical peripheral wall portion 7 is provided at the upper portion of the earth and sand modifier discharge portion 8, and one end of this stirring blade is provided. The part is provided with an eccentric weight 18 for adding vibration to the rotary shaft by the rotation of the rotary shaft , and the rotary shaft 16 is rotationally driven by a motor 17.
[0020]
On the other hand, an electromagnetic solenoid vibration feeder 20 is attached to the earth / sand modifier discharging unit 8 of the earth / sand modifier supply device 4 so as to be in close contact with the opening edges 81 and 82 of the outlet 8. Reference numeral 19 denotes an electromagnetic solenoid unit that operates the electromagnetic solenoid vibration feeder unit 20.
[0021]
The electromagnetic solenoid vibration feeder portion 20 is configured by covering a core portion 22 with a covering rubber 21, and the core portion 22 of the electromagnetic solenoid vibration feeder portion 20 is attached to the electromagnetic solenoid portion 19 via an arm member 23. . When the power to the electromagnetic solenoid unit 19 is off, the electromagnetic solenoid vibratory feeder unit 20 is in close contact with the opening edges 81 and 82 of the sediment modifier discharging unit 8 of the sediment modifier supplying device 4, and the discharge unit 8. The outlet is closed.
[0022]
Next, when the power is turned on, the electromagnetic solenoid unit 19 is actuated, and the electromagnetic solenoid vibration feeder unit 20 is moved from the opening edge 82 of the sediment modifier 4 by the gap a by the arm member 23 of the electromagnetic solenoid unit 19. It is lowered downward (see the description in FIG. 3). The electromagnetic solenoid vibration feeder 20 is pushed forward by the gap b while being lowered downward by the gap a. At this time, the earth and sand modifier on the electromagnetic solenoid vibration feeder 20 is the gap. a is discharged (see the description of FIG. 4). Further, the electromagnetic solenoid vibration feeder unit 20 is raised upward by the gap a and is in close contact with the opening edge portion 82 of the sediment modifier supply device 4 (see the description of FIG. 5). The outlet is closed, and then the electromagnetic solenoid vibration feeder 20 is pulled backward by the gap b to return to the state shown in FIG.
[0023]
Then, the soil modifying material is discharged from the gap a while repeating such a cycle at a high speed. The vibration cycle of the electromagnetic solenoid vibration feeder unit 20 can be obtained by adjusting the frequency of the power supply to the electromagnetic solenoid unit 19 in an adjustable manner.
[0024]
Next, the function of the earth and sand modifier supply device 4 of the present invention will be described. The rotating shaft 16 provided with the stirring blades is driven to rotate by the motor 17, and the earth and sand modifier is supplied by the rotation of the stirring blades of the rotating shaft 16. An eccentric weight that agitates the earth-and-sand modifier contained in the apparatus 4 but adds vibration to the rotating shaft by rotation of the rotating shaft at one end of the stirring blade of the rotating shaft 16 provided with the stirring blade. 18 is provided, the rotating shaft 16 provided with the stirring blades rotates with a large amplitude width as compared with the case where the eccentric weight 18 is not provided, and the earth and sand modifier supply device 4 The earth-and-sand modifying material accommodated inside can be agitated, and the earth-and-sand modifying material can be sent downward without causing a bridge phenomenon inside the earth-and-sand modifying material supply device 4.
[0025]
In addition, the eccentric vibration of the rotary shaft 16 provided with the stirring blade is transmitted to the peripheral wall portion 7 of the earth and sand modifier supply device 4, and vibration is added to the entire earth and sand modifier supply apparatus 4, so that the earth and sand modifier is added. The supply device 4 is shaken, and the sediment modifier inside the sediment modifier 4 is further promoted to feed downward.
[0026]
The earth and sand modifier sent to the discharge port of the earth and sand modifier discharge unit 8 of the earth and sand modifier supply device 4 is mixed and agitated by the electromagnetic solenoid vibration feeder 20 that closes the outlet. The electromagnetic solenoid vibration feeder 20 is activated by supplying power to the electromagnetic solenoid 19 of the electromagnetic solenoid vibration feeder 20 that closes the discharge port, and this electromagnetic solenoid vibration feeder According to the vibration cycle of the lower 20-the front-the upper-the rear, the sediment modifier is mixed and stirred from the gap a between the electromagnetic solenoid vibration feeder 20 and the opening edge 82 of the sediment modifier 4. 3 and mixed and stirred with the excavated earth and sand carried from the sieve device 1 by the mixing and stirring device 3.
[0027]
The amount of earth and sand modifier supplied from the earth and sand modifier 4 depends on the downward gap a and the forward gap b. This cycle depends on the frequency of the power supply to the electromagnetic solenoid 19. Therefore, by adjusting the frequency of the power source, the amount of the soil modifying material to be added can be finely adjusted in accordance with the state of the excavated soil to be modified and the use of the improved soil. In addition, since the electromagnetic solenoid vibration feeder is attached to the discharge port at the bottom of the earth and sand modifier supply apparatus, the shutter device provided in the conventional earth and sand modifier supply apparatus becomes unnecessary.
[0028]
【The invention's effect】
As described above, the earth and sand modifier supply device according to the present invention is an electromagnetic solenoid that operates in the downward-front-upper-rear direction according to the frequency of the power supplied to the discharge port of the chute at the bottom of the earth-and-sand modifier supply apparatus. A vibratory feeder is installed, and this electromagnetic solenoid vibratory feeder can easily fine-tune the discharge amount of the sediment modifier by adjusting the electromagnetic cycle. Thus, it is possible to finely adjust the added amount of the earth and sand modifying material to be added, and there is an effect that the shutter device provided in the conventional earth and sand modifying material supply apparatus can be eliminated.
[0029]
In addition, a rotary shaft provided with a stirring blade provided with an eccentric weight that adds vibration to the rotary shaft by rotation of the rotary shaft at one end is provided inside the earth and sand modifier supply device. This gives vibration to the sediment modifier supply device itself, stirs the sediment modifier contained in the sediment modifier supply device, and at the inside of the sediment modifier feed device 4 The effect that the earth and sand modifier can be sent downward without causing a bridge phenomenon can be obtained.
[Brief description of the drawings]
FIG. 1 is a schematic vertical sectional view of an apparatus for supplying earth and sand modifier according to the present invention,
FIG. 2 is an enlarged cross-sectional view of a chute outlet of the earth and sand modifier supply device of the present invention,
3 is an operational state diagram of an electromagnetic solenoid vibration feeder provided at the chute discharge port of FIG.
4 is an operational state diagram of an electromagnetic solenoid vibration feeder provided at the chute discharge port of FIG . 2 ;
5 is an operational state diagram of an electromagnetic solenoid vibration feeder provided at the chute discharge port of FIG.
FIG. 6 is a side view of the earth and sand reformer,
FIG. 7 is a schematic vertical sectional view of a conventional earth and sand modifier supply device.
[Explanation of symbols]
1 sieve device, 2 belt conveyor, 3 mixing and stirring device, 4 earth and sand modifier supply device,
5 belt conveyors, 6 stock yards, 7 peripheral walls, 8 earth and sand modifier discharger,
81 opening edge, 82 opening edge, 9 earth and sand modifier supply port, 10 chute,
11 Screw conveyor for stirring, 12 Screw conveyor, 13 Motor,
14 motor, 15 shutter device, 16 rotating shaft with stirring blade,
17 motor, 18 eccentric weight, 19 electromagnetic solenoid part,
20 Electromagnetic solenoid vibration feeder, 21 Cover rubber,
22 Core part of vibration feeder part, 23 Arm member.

Claims (2)

土砂改質装置の土砂改質材供給装置において、前記土砂改質材供給装置の底部の排出口に改質材供給量調整手段として、給電される電源の周波数により下方−前方−上方−後方と作動する電磁ソレノイド振動フィーダを設け、該電磁ソレノイド振動フィーダの電磁ソレノイドに印加する給電量を加減調整して給電することにより前記排出口からの土砂改質材の供給量を調整可能としたことを特徴とする土砂改質装置の土砂改質材供給装置。In the earth and sand modifier supply device of the earth and sand reformer, as a modifier supply amount adjusting means to the outlet of the bottom of the earth and sand modifier supply apparatus, depending on the frequency of the power supplied, lower-front-upper-rear Provided an electromagnetic solenoid vibration feeder that operates , and by adjusting the power supply amount applied to the electromagnetic solenoid of the electromagnetic solenoid vibration feeder, it is possible to adjust the supply amount of earth and sand modifier from the discharge port by supplying power Sediment reforming material supply device of the soil reforming device characterized. 前記土砂改質材供給装置の内部に、投入された土砂改質材を撹拌するため、撹拌羽根が設けられた回転軸をモータによって回転駆動されるように設け、該撹拌羽根の一端部に前記回転軸の回転により前記回転軸に振動を付加する偏心錘を付設したことを特徴とする請求項1に記載の土砂改質装置の土砂改質材供給装置。In order to agitate the introduced earth and sand modifier in the earth and sand modifier supply apparatus, a rotary shaft provided with a stirring blade is provided to be driven to rotate by a motor, and the one end of the stirring blade is provided with the above-mentioned The earth and sand modifier supply device of the earth and sand reformer according to claim 1, further comprising an eccentric weight that applies vibration to the rotating shaft by rotation of the rotating shaft .
JP2000185600A 2000-06-21 2000-06-21 Sediment modifier supply device for sediment modifier Expired - Fee Related JP3677435B2 (en)

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