JP4068439B2

JP4068439B2 - Drilling earth and sand transfer device

Info

Publication number: JP4068439B2
Application number: JP2002340442A
Authority: JP
Inventors: 喬岡田; 信二矢吹
Original assignee: Kumagai Gumi Co Ltd
Current assignee: Kumagai Gumi Co Ltd
Priority date: 2002-11-25
Filing date: 2002-11-25
Publication date: 2008-03-26
Anticipated expiration: 2022-11-25
Also published as: JP2004176269A

Description

【０００１】
【発明の属する技術分野】
本発明は、トンネル施工において掘削した土砂を坑口側に移送するための掘削土砂移送装置に関する。
【０００２】
【従来の技術】
トンネル施工においては、掘削された土砂をベルトコンベア装置を用いて坑口側に移送する場合、ベルトコンベア装置として、掘削先端部位側の掘削作業が進むにつれてベルトコンベアの土砂移送長さを伸ばすことができる特殊な構造のベルトコンベア装置を使用することが知られている。
【０００３】
【発明が解決しようとする課題】
トンネル施工においては、掘削先端部位側の掘削作業が進むにつれてその分坑口側の施工も進める。即ち、掘削先端部位側の掘削作業とともに坑口側もコンクリートが打設されていくのでダンプトラックなどの土砂運搬車も掘削進行方向側に進めるようになる。しかし、従来のベルトコンベア装置は、掘削先端部位側の掘削作業が進むにつれて掘削先端部位側のベルトコンベアの長さを伸ばすだけで、坑口側の位置はそのまま動かない。従って、掘削先端部位側の掘削作業が進むにつれてトラックなどの土砂運搬車も掘削進行方向側に進めるようになって、その分、坑口側のベルトコンベアの部分が不要になるにも拘わらず、従来のベルトコンベア装置では不要なベルトコンベアの部分が坑口側に設置されたままとなるので無駄であった。このため、ベルトコンベア装置のコストが高くなるという課題があった。また、上記従来のベルトコンベア装置は、掘削先端部位側のベルトコンベアの長さを伸ばして設定する作業も大変であるという課題があった。
【０００４】
【課題を解決するための手段】
本発明の掘削土砂移送装置は、土砂を坑口側に移送するために掘削先端部位側から坑口方向に延長するように設けられる土砂移送長が所定長さのベルトコンベア装置と、掘削先端部位側から坑口側に延長するように複数の単位レール材が連結されてトンネル孔内に吊り下げられて成る吊りレールと、この吊りレールを介して移動可能な移動体を上部に備えるとともにこの吊りレールにベルトコンベア装置を吊り下げるための複数のベルトコンベア吊り下げ部材と、この複数のベルトコンベア吊り下げ部材の上部側を連結する牽引用連結部材と、掘削先端部位側の掘削が進行した後に坑口側より取外した任意の数の単位レールを吊りレールの掘削先端部位側に継ぎ足すように連結して成る移動作業用吊りレールと、掘削先端部位側のベルトコンベア吊り下げ部材を掘削進行方向に牽引することにより、このベルトコンベア吊り下げ部材及び後続のベルトコンベア吊り下げ部材の移動体を移動作業用吊りレールを介して掘削進行方向に移動させ、かつ複数のベルトコンベア吊り下げ部材で吊り下げられたベルトコンベア装置を掘削進行方向側に移動させる牽引手段とを備えたことを特徴とする。
単位レール材をトンネル孔内に吊り下げるレール吊り下げ部材を備え、これらレール吊り下げ部材は、吊り下げ長さを調整するための長さ調整手段を備えることも特徴とする。
単位レール材は、垂直板とこの垂直板の上下に設けられた上下水平板とを備えた断面Ｉ字状の長尺棒材で構成され、レール吊り下げ部材は、トンネル孔内上面より吊られて下端側に設けられた係止部材で上水平板の下面を係止することにより単位レール材を吊り下げた状態に支持し、ベルトコンベア吊り下げ部材は、上部に、垂直板を挟むように配置されて下水平板の上面を移動可能でかつベルトコンベア装置の重量を下水平板の上面で受けさせる係止部材として機能する移動体としての回転可能な車輪を備えたことも特徴とする。
牽引手段は、移動作業用吊りレールを反力受けとして利用する牽引装置であることも特徴とする。
ベルトコンベア装置は坑口側に位置する末端側にベルトコンベア駆動制御装置を備え、このベルトコンベア駆動制御装置は、トンネル孔内に設置される土砂積み込み機の制御装置と通信線又は無線により接続され、ベルトコンベア駆動制御装置を介してコンベア停止を指示したときに、ベルトコンベア駆動制御装置は、土砂積み込み機の制御装置に停止信号を送って土砂積み込み機を停止させ、また、土砂積み込み機の制御装置に表示制御信号を送って、土砂積み込み機に設けられたランプ等の表示手段に積み込み中止を示す表示を行なわせるとともに、ベルトコンベア駆動制御装置を介してコンベア起動を指示したときに、ベルトコンベア駆動制御装置は、土砂積み込み機の制御装置に起動信号を送って土砂積み込み機を起動させ、また、土砂積み込み機の制御装置に表示制御信号を送って、土砂積み込み機に設けられたランプ等の表示手段に積み込み許可を示す表示を行なわせることも特徴とする。
【０００５】
【発明の実施の形態】
図１は本発明の実施の形態による掘削土砂移送装置を用いて施工作業を行なっている施工トンネル内の様子を示す図である。
トンネル掘削施工において、崩れやすい地盤の場合には掘削先端部位Ｘにおける切羽Ｙを自立させるために、トンネル掘削作業を数段階に分けて行なっていく方法（「上半工法」という）がある。図１ではこの上半工法による施工を示している。即ち、切羽Ｙの面積を大きくとると切羽Ｙが崩れやすいため切羽Ｙの面積を小さくして掘削する。例えば、まず、切羽Ｙの面積を上半円面積に保って掘削機等で掘削していき（即ち、Ａ−Ａ断面は図２（ａ）に示すように上半円の孔である）、その後、断面上半円に掘削された孔の下側を油圧ショベルＳ等で掘削し（即ち、Ｂ−Ｂ断面は図２（ｂ）に示すように上半円に加えて下半円の一部が加えられた孔である）、さらに、孔の下側を掘削してコンクリートＣを打設する（即ち、Ｃ−Ｃ断面は図２（ｃ）に示すように下側にコンクリートが打設された孔となる）。尚、図１において掘削先端部位Ｘ側が示されている上図の右側は坑口Ｚ側が示されている下図の左側と繋がる。
【０００６】
図１において、１はベルトコンベア装置であり、これは、掘削先端部位Ｘ側から坑口Ｚ方向に延長するように設置されるもので、土砂移送長さが例えば２００ｍに設定され、掘削先端部位Ｘ側に設置される土砂積み込み機Ａ及び掘削中間部位ＸＡに設置される土砂積み込み機Ｂに積み込まれる土砂を坑口Ｚ側のダンプトラックＤの位置まで搬送するものである。
【０００７】
ベルトコンベア装置１は、支持手段２で吊り下げられた状態に支持される。
上記支持手段２は、図１，３に示すように、複数の単位レール材３０と、この単位レール材３０をトンネル孔内上面１００より吊り下げた状態に支持する複数のレール吊り下げ部材４と、複数の単位レール材３０が連結されて複数のレール吊り下げ部材４で吊り下げられて成る吊りレール３と、上部に移動体としての車輪５０を有し、この車輪５０を介してベルトコンベア装置１を移動可能なように吊りレール３より吊り下げた状態に支持する複数のベルトコンベア吊り下げ部材５とで構成される。
【０００８】
例えば、単位レール材３０の長さａは２ｍ、これに合せてレール吊り下げ部材４の取付ピッチ間隔もほぼ２ｍピッチ間隔とし、また、ベルトコンベア吊り下げ部材５の取付ピッチ間隔ｂは５ｍとする。
また、上記吊りレール３は、ベルトコンベア装置１の土砂移送長さに対応した長さに設定される。
また、各ベルトコンベア吊り下げ部材５の上部側はそれぞれ牽引用連結部材６０を介して連結される。
【０００９】
図４は図３におけるレール吊り下げ部材４、単位レール材３０、ベルトコンベア吊り下げ部材５の拡大図、図５は図３のＤ−Ｄ断面を拡大した図である。
図４，５に示すように、単位レール材３０は、垂直板３０ａとこの垂直板３０ａの上下に設けられた上下水平板３０ｂ，３０ｃとを備えて成る断面Ｉ字状の長尺部材が用いられる。
【００１０】
レール吊り下げ部材４は、トンネル孔内上面１００に施工された支保工４００に設けられたブラケット４０１に取付けられる鎖４１と下部側には設けられる鎖４２とが長さ調整手段としてのターンバックル４３を介して接続されていて、鎖４２の下端側には単位レール材３０の上水平板３０ｂの下面３０ｄに係止する把持係止部材４４を有する。尚、把持係止部材４４における爪部４５の上側には、単位レール材３０を幅広に受けることができるように幅広受け部４６が設けられ、これにより単位レール材３０を安定に受けて吊り下げることができるようになっている。
また、各単位レール材３０は各レール吊り下げ部材４によりトンネル孔内上面１００に吊り下げられ、各単位レール材３０の吊り下げ高さがターンバックル４３で調整されて連結ブラケット４７を介してボルト４８，ナット等で連結され、これにより、掘削先端部位Ｘ側から坑口Ｚ方向に水平に延長する吊りレール３が形成される。つまり、ターンバックル４３により吊りレール３を水平に調整する作業が容易になる。
【００１１】
ベルトコンベア吊り下げ部材５は、上部側に、単位レール材３０の垂直板３０ａを挟むように配置されて下水平板３０ｃの上面３０ｅを移動可能でかつベルトコンベア装置１の重量を下水平板３０ｃの上面３０ｅで受けさせる係止部材として機能する移動体としての回転可能な車輪５０を有するとともに、下部側に、ベルトコンベア装置１を吊るための鎖５１を２本有するものである。尚、車輪５０は、垂直板３０ａを挟んで両側に２個ずつ設けられる。上記各鎖５１の上端５１ｔ，５１ｔは、牽引用連結部材６０が連結される連結プレート５２の両側に設けられたブラケット５３，５３に取付けらている。車輪５０は車輪保持プレート７０により回転可能なように取付けられている。この車輪保持プレート７０は、一側にボルト７１を有し、他側に車輪軸（図示せず）が設けられたものであり、車輪連結プレート８０にボルト７１がナット７２で固定され、車輪軸を車輪５０の軸孔（図示せず）に遊嵌させることにより、車輪５０が回転可能なように取付けられている。上記垂直板３０ａを挟むように車輪５０が取付けられて対向する車輪連結プレート８０，８０の間隔は、間隔保持パッキン材８１，８１で決められており、これにより、車輪連結プレート８０，８０が平行に対向するよう固定され、車輪５０が下水平板３０ｃの上面３０ｅに正確に載置されるように構成されている。即ち、間隔保持パッキン材８１，８１及び連結プレート５２を貫通して車輪連結プレート８０の外側に突出するボルト材８２の両側をナット８３，８３を用いて車輪連結プレート８０，８０に固定することで、車輪連結プレート８０，８０は平行に対向する状態で連結プレート５２に連結されている。このベルトコンベア吊り下げ部材５は、上述したように吊りレール３に対して例えば５ｍ間隔で取付けられ、各ベルトコンベア吊り下げ部材５の連結プレート５２は牽引用連結部材６０により連結される。
【００１２】
ベルトコンベア装置１は、上送りローラ部１１と、下送りローラ部１２とを備える。上送りローラ部１１は、ベルト１０の断面が凹状態になるように３本のローラ１１ａ，１１ｂ，１１ｃが配置されて成る。下送りローラ部１２は１本のローラ１２ａが水平に配置されて成る。
下送りローラ部１２のローラ１２ａの取付土台１２Ａは、ベルトコンベア装置１の土砂移送方向に対して所定の間隔で配置されるが、各取付土台１２Ａの側部が側部連結板１３，１３で連結されて各取付土台１２Ａの配置間隔が所定の間隔に維持されている。この取付土台１２Ａの位置における側部連結板１３，１３から下方に支持部材１４，１４を延長させ、これら支持部材１４，１４によりローラ１２ａが回転自在に支持されている。上記側部連結板１３，１３の上部側には、各取付土台１２Ａの配置間隔より狭い配置間隔で上送りローラ支持土台１１Ａが取付けられる。これら各ローラ支持土台１１Ａより設けられる支持部材１１Ｂにより各ローラ１１ａ，１１ｂ，１１ｃが回転可能に支持されている。尚、上送りローラ部１１により送られるベルト１０には土砂重量が加わるので上送りローラ支持土台１１Ａの配置間隔を狭くして土砂重量を支えるようにしている。また、ベルトコンベア吊り下げ部材５の鎖５１，５１の下端５１ｅ，５１ｅは、側部連結板１３，１３に設けられたブラケット１５，１５に取付けられている。
【００１３】
次に、ベルトコンベア装置１の移動方法を説明する。掘削先端部位Ｘ側の掘削が進行したら、ベルトコンベア装置１の末端１Ｂ側から単位レール材３０、レール吊り下げ部材４を任意の数だけ取外して、ベルトコンベア装置１の先端側に運ぶ（例えば、図１に示す様に、３つの単位レール材３０及びレール吊り下げ部材４を取外して運ぶ、また、これらに関連していたベルトコンベア吊り下げ部材５も取外す）。そして、運んできたレール吊り下げ部材４を図６に示すようにベルトコンベア装置１の先端１Ａ側のトンネル孔内上面１００に吊り下げて単位レール材３０を取付け、単位レール材３０同士を連結ブラケット４７を介して連結することにより、移動作業用吊りレール３Ａを形成する。即ち、吊りレール３の先端側３ｔに任意の数の単位レール材３０を継ぎ足していって移動作業用吊りレール３Ａを形成する。
そして、この移動作業用吊りレール３Ａの先端３Ａｔ側に固定具９０を介して固定側シーブブロック９１を取付け、ベルトコンベア吊り下げ部材５の近くにウインチ装置９３を内蔵した移動側シーブブロック９２を取付ける。この移動側シーブブロック９２は、上部の可動部９４に、コンベア吊り下げ部材５と同様な車輪９５を有し、この車輪９５を移動作業用吊りレール３Ａの下水平板３０ｃの上面３０ｅに載せて、可動部９４とベルトコンベア吊り下げ部材５の連結プレート５２とを牽引用連結部材６１で連結することにより取付けられる。そして、ワイヤーロープ９６の一端９６ａを固定側シーブブロック９１の巻枠の中心軸に固定してワイヤーロープ９６を各シーブブロック９１，９２間に複数回巻き渡して他端９６ｂをウインチ装置９３に固定する。この状態で、ウインチ装置９３を駆動させることで、移動側シーブブロック９２の可動部９４の車輪９５が移動作業用吊りレール３Ａを介して掘削進行方向に移動し、牽引用連結部材６１で連結されたベルトコンベア吊り下げ部材５及び牽引用連結部材６０で連結された後続のベルトコンベア吊り下げ部材５の車輪５０が移動作業用吊りレール３Ａを介して掘削進行方向に移動するので、これらベルトコンベア吊り下げ部材５で吊り下げられているベルトコンベア装置１も掘削進行方向に移動する。即ち、移動作業用吊りレール３Ａを反力受けとして利用する各シーブブロック９１，９２及びウインチ装置９３から成る牽引装置を用いることでベルトコンベア装置１を掘削進行方向に移動させる。
以後、掘削が進行するたびに、上記と同様に、ベルトコンベア装置１の末端側の単位レール材３０を取外して、吊りレール３の先端３ｔ側に継ぎ足していって移動作業用吊りレール３Ａを形成し、牽引装置でベルトコンベア吊り下げ部材５を牽引してベルトコンベア装置１を掘削進行方向に移動させる。
【００１４】
以上により、土砂移送長さを変更しない安価なベルトコンベア装置１を用いることができ、この安価なベルトコンベア装置１を掘削進行方向側に簡単に移動できる。また、移動作業用吊りレール３Ａを簡単に形成できるので、移動作業時の設定作業も容易に行なえる。
尚、図６において、９９はベルトコンベア装置１のベルト１０上に土砂を投入するための投入ホッパである。
【００１５】
尚、単位レール材３０、レール吊り下げ部材４は数個余分に用意しておいて、最初だけはこの余分に用意しておいた単位レール材３０、レール吊り下げ部材４を用いて移動作業用吊りレール３Ａを形成するようにしてベルトコンベア装置１を移動し、移動後は、移動後のベルトコンベア装置１の末端側において不要となった単位レール材３０、レール吊り下げ部材４を取外して、次の移動作業に用いるようにしてもよい。この場合、移動後のベルトコンベア装置１の末端側にベルトコンベア吊り下げ部材５を取付けて移動後のベルトコンベア装置１の末端側を吊りレール３に吊り下げる作業を不要とできる。
【００１６】
また、ベルトコンベア装置１の末端１Ｂ側には、ベルトコンベア駆動制御装置１１０が設けられている。このベルトコンベア駆動制御装置１１０は、土砂積み込み機Ａの制御装置及び土砂積み込み機Ｂの制御装置と通信線又は無線により接続されており、ダンプトラックＤの運転手がベルトコンベア駆動制御装置１１０を介してコンベア停止を指示したときに、ベルトコンベア駆動制御装置１１０は、土砂積み込み機Ａ及び土砂積み込み機Ｂの制御装置に停止信号を送ってこれらを停止させ、また、土砂積み込み機Ａ及び土砂積み込み機Ｂの制御装置に表示制御信号を送って、土砂積み込み機Ａ及び土砂積み込み機Ｂに設けられたランプ等の表示手段に積み込み中止を示す表示を行なわせる。また、ダンプトラックＤの運転手がベルトコンベア駆動制御装置１１０を介してコンベア起動を指示したときに、ベルトコンベア駆動制御装置１１０は、土砂積み込み機Ａ及び土砂積み込み機Ｂの制御装置に起動信号を送ってこれらを起動させ、また、土砂積み込み機Ａ及び土砂積み込み機Ｂの制御装置に表示制御信号を送って、土砂積み込み機Ａ及び土砂積み込み機Ｂに設けられたランプ等の表示手段に積み込み許可を示す表示を行なわせる。以上により、ダンプトラックＤの積み込み量が規定量となった時にベルトコンベア装置１，土砂積み込み機Ａ，土砂積み込み機Ｂを連動して停止させることができるとともに、積み込み作業者（油圧ショベルＳの運転手や、土砂積み込み機Ａの近辺で作業する図示しないブルドーザの運転手等）に積み込み作業の中止を促すことができ、また、空のダンプトラックＤを設置したときに、ベルトコンベア装置１，土砂積み込み機Ａ，土砂積み込み機Ｂを連動して起動させることができるとともに、積み込み作業者に積み込み作業の開始を促すことができる。
【００１７】
尚、本発明は、上半円工法以外のトンネル掘削施工作業にも適用できる。また、車輪以外の移動体を用いてもよく、ウインチ等以外の牽引手段を用いてもよい。また、レール吊り下げ部材４、単位レール材３０、ベルトコンベア吊り下げ部材５の形態は上述した形態以外のものを用いてもよい。
【００１８】
【発明の効果】
請求項１の掘削土砂移送装置によれば、ベルトコンベアの土砂移送長さを伸ばすことができる特殊な構造で高価な従来のベルトコンベア装置に比べて、土砂移送長さを変更しない安価なベルトコンベア装置を用いて、ベルトコンベア装置を掘削進行方向側に簡単に移動できるようになる。また、移動作業用吊りレールを簡単に形成できるので、従来に比べて移動作業時の設定作業が容易になる。
請求項２によれば、長さ調整手段を有するレール吊り下げ部材を備えたので、吊りレールを水平に設定するための調整作業を容易に行なえる。
請求項３によれば、単位レール材として、垂直板とこの垂直板の上下に設けられた上下水平板とを備えた断面Ｉ字状の長尺棒材を用い、レール吊り下げ部材で上水平板の下面を係止して単位レール材を吊り下げ、上部に、垂直板を挟むように配置されて下水平板の上面を移動可能で、かつ、ベルトコンベア装置の重量を下水平板の上面で受けさせる係止部材として機能する移動体としての回転可能な車輪を備えたベルトコンベア吊り下げ部材を用いたので、吊り作業を容易に行なえ、また、移動作業用吊りレールの形成作業も容易に行なえるようになる。
請求項４によれば、移動作業用吊りレールを反力受けとして利用する牽引装置を用いたので、牽引装置を小型化でき、かつ、容易に牽引できる。
請求項５によれば、ベルトコンベア装置と土砂積み込み機を連動して起動・停止させることができるとともに、積み込み作業者に積み込み作業の中止・開始を促すことができる。
【図面の簡単な説明】
【図１】本発明の実施の形態による掘削土砂移送装置を用いて施工作業を行なっている施工トンネル内の様子を示す図。
【図２】（ａ）は図１のＡ−Ａ断面図、（ｂ）は図１のＢ−Ｂ断面図、（ｃ）は図１のＣ−Ｃ断面図。
【図３】図１の一部拡大図。
【図４】図３におけるレール吊り下げ部材、単位レール材、ベルトコンベア吊り下げ部材の拡大図。
【図５】図３のＤ−Ｄ断面を拡大した図。
【図６】移動作業時の設定を説明するための図。
【符号の説明】
１ベルトコンベア装置、２支持手段、３吊りレール、３Ａ移動作業用吊りレール、４レール吊り下げ部材、５ベルトコンベア吊り下げ部材、
３０単位レール材、３０ａ垂直板、３０ｂ上水平板、３０ｃ下水平板、３０ｄ上水平板の下面、３０ｅ下水平板の上面、４４把持係止部材、
４３ターンバックル（長さ調整手段）、５０車輪（移動体）、
６０，６１牽引用連結部材、９１固定側シーブブロック、９２移動側シーブブロック、９３ウインチ装置、１１０ベルトコンベア駆動制御装置、
Ｘ掘削先端部位、Ｚ坑口。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drilling sediment transport apparatus for transporting earth and sand excavated at the tunnel construction in the wellhead side.
[0002]
[Prior art]
In tunnel construction, when transferring excavated earth and sand to the wellhead side using a belt conveyor device, as the belt conveyor device, as the excavation work on the excavation tip site side proceeds, the sediment transfer length of the belt conveyor can be extended. It is known to use a belt conveyor device having a special structure.
[0003]
[Problems to be solved by the invention]
In tunnel construction, as the excavation work on the excavation tip site side proceeds, the construction on the mine entrance side is also advanced accordingly. That is, since the concrete is also cast on the wellhead side along with the excavation work on the excavation tip portion side, the earth and sand transport vehicle such as the dump truck is also advanced in the excavation progress direction side. However, the conventional belt conveyor device simply extends the length of the belt conveyor on the excavation tip portion side as the excavation work on the excavation tip portion side proceeds, and the position on the wellhead side does not move as it is. Accordingly, as the excavation work on the excavation tip portion side proceeds, the sediment transport vehicle such as a truck is also advanced in the excavation progress direction side. In this belt conveyor apparatus, an unnecessary belt conveyor portion remains installed on the wellhead side, which is useless. For this reason, the subject that the cost of a belt conveyor apparatus became high occurred. In addition, the conventional belt conveyor device has a problem in that it is difficult to set the belt conveyor by extending the length of the belt conveyor on the excavation tip portion side.
[0004]
[Means for Solving the Problems]
The excavation earth and sand transfer device of the present invention is a belt conveyor device having a predetermined length of earth and sand transfer provided to extend from the excavation tip portion side in order to transfer the earth and sand to the wellhead side, and from the excavation tip portion side A plurality of unit rail members are connected so as to extend to the wellhead side and suspended in the tunnel hole, and a movable body movable through the suspension rail is provided at the top and a belt is attached to the suspension rail. A plurality of belt conveyor suspension members for suspending the conveyor device, a traction connection member that connects the upper side of the plurality of belt conveyor suspension members, and the digging head side after the excavation progresses, the detachment from the wellhead side Any number of unit rails connected so as to be added to the excavation tip portion side of the suspension rail, and a belt controller on the excavation tip portion side. A) Pulling the suspension member in the direction of excavation moves the moving body of the belt conveyor suspension member and the subsequent belt conveyor suspension member in the direction of excavation through the moving work suspension rail, and And a traction means for moving the belt conveyor device suspended by the belt conveyor suspension member to the excavation traveling direction side .
A rail suspension member for suspending the unit rail material in the tunnel hole is provided, and these rail suspension members are also provided with a length adjusting means for adjusting the suspension length.
The unit rail member is composed of a long bar having an I-shaped cross section provided with a vertical plate and upper and lower horizontal plates provided above and below the vertical plate, and the rail suspension member is suspended from the upper surface in the tunnel hole. By supporting the lower surface of the upper horizontal plate with the locking member provided on the lower end side, the unit rail material is supported in a suspended state, and the belt conveyor hanging member is sandwiched between the vertical plate at the upper part It is also characterized in that it is provided with a rotatable wheel as a moving body that is arranged and can move on the upper surface of the lower horizontal plate and functions as a locking member that receives the weight of the belt conveyor device on the upper surface of the lower horizontal plate.
The traction means is also characterized by being a traction device that uses a suspension rail for moving work as a reaction force receiver.
The belt conveyor device includes a belt conveyor drive control device on the terminal side located on the wellhead side, and this belt conveyor drive control device is connected to the control device of the earth and sand loader installed in the tunnel hole by a communication line or wirelessly, When instructed to stop the conveyor via the belt conveyor drive control device, the belt conveyor drive control device sends a stop signal to the control device of the earth and sand loader to stop the earth and sand loader, and the control device of the earth and sand loader The display control signal is sent to the display means such as a lamp provided in the earth and sand loader to indicate the stop of loading, and when the conveyor activation is instructed via the belt conveyor drive control device, the belt conveyor drive The control device sends a start signal to the control device of the earth and sand loader to start the earth and sand loader, It sends a display control signal to the control device for sand loader, also characterized in that to perform a display showing the loading permission display means such as a lamp provided on the sediment loader.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a diagram showing a state in a construction tunnel in which construction work is performed using the excavated earth and sand transport device according to the embodiment of the present invention.
In tunnel excavation construction, there is a method of performing tunnel excavation work in several stages (referred to as “upper half construction method”) in order to make the face Y at the excavation tip portion X self-supporting in the case of ground that is easily collapsed. FIG. 1 shows the construction by this upper half method. That is, when the area of the face Y is increased, the face Y tends to collapse, and therefore the area of the face Y is reduced for excavation. For example, first, the area of the face Y is maintained in the upper semicircular area and excavated with an excavator or the like (that is, the AA cross section is an upper semicircular hole as shown in FIG. 2A). Thereafter, the lower side of the hole excavated in the upper semicircle is excavated with a hydraulic excavator S or the like (that is, the BB cross section is one of the lower semicircle in addition to the upper semicircle as shown in FIG. 2B). In addition, the bottom side of the hole is excavated and concrete C is placed (that is, the C-C cross section is placed under the concrete as shown in FIG. 2C). Hole). In addition, the right side of the upper figure in which the excavation tip part X side is shown in FIG. 1 is connected with the left side of the lower figure in which the wellhead Z side is shown.
[0006]
In FIG. 1, 1 is a belt conveyor device, which is installed so as to extend in the direction of the wellhead Z from the excavation tip portion X side, the sediment transport length is set to 200 m, for example, and the excavation tip portion X The earth and sand loaded on the earth and sand loader A and the earth and sand loader B installed on the excavation intermediate part XA are transported to the position of the dump truck D on the wellhead Z side.
[0007]
The belt conveyor device 1 is supported in a state of being suspended by the support means 2.
As shown in FIGS. 1 and 3, the support means 2 includes a plurality of unit rail members 30 and a plurality of rail suspension members 4 that support the unit rail members 30 in a state suspended from the tunnel hole inner upper surface 100. A suspension rail 3 is formed by connecting a plurality of unit rail members 30 and suspended by a plurality of rail suspension members 4, and has a wheel 50 as a moving body at the top, and a belt conveyor device via the wheel 50. 1 is comprised of a plurality of belt conveyor suspension members 5 that are supported by the suspension rail 3 so as to be movable.
[0008]
For example, the length a of the unit rail member 30 is 2 m, and the mounting pitch interval of the rail suspension members 4 is also approximately 2 m according to this length, and the mounting pitch interval b of the belt conveyor suspension member 5 is 5 m. .
The suspension rail 3 is set to a length corresponding to the sediment transport length of the belt conveyor device 1.
Further, the upper side of each belt conveyor suspension member 5 is connected via a pulling connection member 60.
[0009]
FIG. 4 is an enlarged view of the rail suspension member 4, the unit rail member 30, and the belt conveyor suspension member 5 in FIG. 3, and FIG. 5 is an enlarged view of the DD section of FIG.
As shown in FIGS. 4 and 5, the unit rail member 30 is a long member having an I-shaped cross section including a vertical plate 30a and upper and lower horizontal plates 30b and 30c provided above and below the vertical plate 30a. It is done.
[0010]
The rail suspension member 4 has a chain 41 attached to a bracket 401 provided on a support 400 constructed on the tunnel hole inner upper surface 100 and a chain 42 provided on the lower side as a turnbuckle 43 as a length adjusting means. A gripping locking member 44 that locks to the lower surface 30d of the upper horizontal plate 30b of the unit rail member 30 is provided on the lower end side of the chain 42. A wide receiving portion 46 is provided on the upper side of the claw portion 45 in the gripping and locking member 44 so that the unit rail material 30 can be received in a wide manner, whereby the unit rail material 30 is stably received and suspended. Be able to.
Further, each unit rail member 30 is suspended from the inner surface 100 of the tunnel hole by each rail suspension member 4, and the suspension height of each unit rail member 30 is adjusted by the turnbuckle 43, and the bolts are connected via the connection bracket 47. 48, which are connected by nuts or the like, thereby forming the suspension rail 3 extending horizontally from the excavation tip portion X side in the wellhead Z direction. That is, the work of adjusting the suspension rail 3 horizontally by the turnbuckle 43 is facilitated.
[0011]
The belt conveyor suspension member 5 is arranged on the upper side so as to sandwich the vertical plate 30a of the unit rail member 30, and can move on the upper surface 30e of the lower horizontal plate 30c, and the weight of the belt conveyor device 1 is increased on the upper surface of the lower horizontal plate 30c. While having the rotatable wheel 50 as a moving body which functions as a locking member received by 30e, it has two chain | strands 51 for hanging the belt conveyor apparatus 1 in the lower part side. Two wheels 50 are provided on both sides of the vertical plate 30a. The upper ends 51t and 51t of the chains 51 are attached to brackets 53 and 53 provided on both sides of the connecting plate 52 to which the pulling connecting member 60 is connected. The wheel 50 is attached so as to be rotatable by a wheel holding plate 70. The wheel holding plate 70 has a bolt 71 on one side and a wheel shaft (not shown) on the other side. The bolt 71 is fixed to the wheel connecting plate 80 by a nut 72, and the wheel shaft Is fitted in a shaft hole (not shown) of the wheel 50 so that the wheel 50 can rotate. The distance between the wheel coupling plates 80, 80 facing each other with the wheel 50 attached so as to sandwich the vertical plate 30a is determined by the spacing packing materials 81, 81, whereby the wheel coupling plates 80, 80 are parallel. The wheel 50 is configured to be accurately placed on the upper surface 30e of the lower horizontal plate 30c. That is, by fixing the both sides of the bolt member 82 that penetrates the spacing packing materials 81 and 81 and the connecting plate 52 and protrudes outside the wheel connecting plate 80 to the wheel connecting plates 80 and 80 using the nuts 83 and 83. The wheel connection plates 80, 80 are connected to the connection plate 52 in a state of facing each other in parallel. As described above, the belt conveyor suspension member 5 is attached to the suspension rail 3 at an interval of 5 m, for example, and the connection plate 52 of each belt conveyor suspension member 5 is connected by a traction connection member 60.
[0012]
The belt conveyor device 1 includes an upper feed roller unit 11 and a lower feed roller unit 12. The upper feed roller unit 11 includes three rollers 11a, 11b, and 11c arranged so that the cross section of the belt 10 is concave. The lower feed roller portion 12 is formed by horizontally arranging one roller 12a.
The mounting base 12A of the roller 12a of the lower feed roller section 12 is arranged at a predetermined interval with respect to the direction of sediment transport of the belt conveyor device 1, but the side portion of each mounting base 12A is a side connecting plate 13, 13. It connects and the arrangement | positioning space | interval of each mounting base 12A is maintained at the predetermined space | interval. Support members 14, 14 are extended downward from the side connecting plates 13, 13 at the position of the mounting base 12A, and the rollers 12a are rotatably supported by the support members 14, 14. 11 A of upper feed roller support bases are attached to the upper part side of the said side part connection board 13 and 13 by the arrangement space narrower than the arrangement space of each attachment base 12A. The rollers 11a, 11b, and 11c are rotatably supported by a support member 11B provided from the roller support base 11A. In addition, since the earth and sand weight is added to the belt 10 sent by the upper feed roller unit 11, the arrangement interval of the upper feed roller support base 11A is narrowed to support the earth and sand weight. Further, lower ends 51 e and 51 e of the chains 51 and 51 of the belt conveyor suspension member 5 are attached to brackets 15 and 15 provided on the side connecting plates 13 and 13.
[0013]
Next, the movement method of the belt conveyor apparatus 1 is demonstrated. When excavation on the excavation tip portion X side proceeds, an arbitrary number of unit rail members 30 and rail suspension members 4 are removed from the end 1B side of the belt conveyor device 1 and conveyed to the tip side of the belt conveyor device 1 (for example, As shown in FIG. 1, the three unit rail members 30 and the rail suspension member 4 are removed and carried, and the belt conveyor suspension member 5 associated therewith is also removed). Then, the rail suspension member 4 carried is suspended on the tunnel hole inner upper surface 100 on the front end 1A side of the belt conveyor device 1 as shown in FIG. 6, and unit rail members 30 are attached, and the unit rail members 30 are connected to each other. By connecting via 47, the moving work suspension rail 3A is formed. That is, an arbitrary number of unit rail members 30 are added to the tip side 3t of the suspension rail 3 to form the suspension rail 3A for moving work.
Then, a fixed sheave block 91 is attached to the tip 3At side of the suspension rail 3A for moving work via a fixing tool 90, and a moving sheave block 92 incorporating a winch device 93 is attached near the belt conveyor suspension member 5. . This moving-side sheave block 92 has wheels 95 similar to the conveyor suspension member 5 on the upper movable portion 94, and this wheel 95 is placed on the upper surface 30e of the lower horizontal plate 30c of the moving work suspension rail 3A. The movable portion 94 and the connecting plate 52 of the belt conveyor suspension member 5 are attached by connecting with a pulling connecting member 61. Then, one end 96a of the wire rope 96 is fixed to the central axis of the winding frame of the fixed sheave block 91, the wire rope 96 is wound between the sheave blocks 91 and 92 a plurality of times, and the other end 96b is fixed to the winch device 93. To do. In this state, by driving the winch device 93, the wheel 95 of the movable portion 94 of the moving sheave block 92 moves in the direction of excavation through the moving work suspension rail 3A and is connected by the traction connecting member 61. Since the wheel 50 of the subsequent belt conveyor suspension member 5 connected by the belt conveyor suspension member 5 and the pulling connection member 60 moves in the direction of excavation through the moving work suspension rail 3A, the belt conveyor suspension The belt conveyor device 1 suspended by the lowering member 5 also moves in the excavation progress direction. That is, the belt conveyor device 1 is moved in the direction of excavation by using a pulling device including the sheave blocks 91 and 92 and the winch device 93 that use the moving work suspension rail 3A as a reaction force receiver.
Thereafter, every time excavation progresses, the unit rail material 30 on the end side of the belt conveyor device 1 is removed and added to the tip 3t side of the suspension rail 3 to form the suspension rail 3A for moving work, as described above. Then, the belt conveyor suspension member 5 is pulled by the traction device to move the belt conveyor device 1 in the direction of excavation.
[0014]
As described above, the inexpensive belt conveyor device 1 that does not change the sediment transport length can be used, and the inexpensive belt conveyor device 1 can be easily moved to the excavation traveling direction side. Further, since the moving work suspension rail 3A can be easily formed, setting work during the moving work can be easily performed.
In FIG. 6, reference numeral 99 denotes a charging hopper for charging earth and sand onto the belt 10 of the belt conveyor device 1.
[0015]
In addition, several unit rail members 30 and rail suspension members 4 are prepared, and only the first unit rail members 30 and rail suspension members 4 are used for moving work. The belt conveyor device 1 is moved so as to form the suspension rail 3A, and after the movement, the unit rail material 30 and the rail suspension member 4 that are no longer necessary on the end side of the moved belt conveyor device 1 are removed, You may make it use for the next movement work. In this case, the operation of attaching the belt conveyor suspending member 5 to the end side of the moved belt conveyor apparatus 1 and suspending the end side of the moved belt conveyor apparatus 1 on the suspension rail 3 can be eliminated.
[0016]
A belt conveyor drive control device 110 is provided on the end 1B side of the belt conveyor device 1. The belt conveyor drive control device 110 is connected to the control device of the earth and sand loader A and the control device of the earth and sand loader B by a communication line or wirelessly, and the driver of the dump truck D passes through the belt conveyor drive control device 110. When the conveyor stop is instructed, the belt conveyor drive control device 110 sends a stop signal to the control devices of the earth and sand loader A and the earth and sand loader B to stop them, and the earth and sand loader A and the earth and sand loader A display control signal is sent to the control device B to cause the display means such as a lamp provided in the earth and sand loader A and the earth and sand loader B to display that the loading is stopped. Further, when the driver of the dump truck D instructs the conveyor to start via the belt conveyor drive control device 110, the belt conveyor drive control device 110 sends a start signal to the control devices of the earth and sand loader A and the earth and sand loader B. Send them to activate them, and send a display control signal to the control device of the earth and sand loader A and the earth and sand loader B to allow loading to display means such as lamps provided in the earth and sand loader A and earth and sand loader B The display indicating is performed. As described above, when the loading amount of the dump truck D reaches the specified amount, the belt conveyor device 1, the earth and sand loading machine A, and the earth and sand loading machine B can be stopped in conjunction with each other, and the loading operator (operation of the hydraulic excavator S) can be stopped. Can be urged to stop the loading operation by hand or a driver of a bulldozer (not shown) working in the vicinity of the earth and sand loader A, and when the empty dump truck D is installed, the belt conveyor device 1, earth and sand The loading machine A and the earth and sand loading machine B can be started in conjunction with each other, and the loading operator can be prompted to start loading work.
[0017]
In addition, this invention is applicable also to tunnel excavation construction work other than an upper half-circle method. Further, a moving body other than wheels may be used, and traction means other than winches or the like may be used. Moreover, you may use the form of the rail suspension member 4, the unit rail material 30, and the belt conveyor suspension member 5 other than the form mentioned above.
[0018]
【The invention's effect】
According to the excavated earth and sand transfer device of claim 1, compared with the conventional belt conveyor device having a special structure capable of extending the earth and sand transfer length of the belt conveyor and expensive, an inexpensive belt conveyor that does not change the earth and sand transfer length. Using the device, the belt conveyor device can be easily moved to the excavation traveling direction side. Further, since the suspension rail for moving work can be easily formed, setting work at the time of moving work becomes easier as compared with the conventional case .
According to 請 Motomeko 2, it facilitates the adjustment work for so with a rail hanging member is set horizontally hanging rail has a length adjustment means.
According to the third aspect , as the unit rail member, a long bar having an I-shaped cross section including a vertical plate and an upper and lower horizontal plate provided above and below the vertical plate is used. The lower surface of the plate is locked to suspend the unit rail material, and the upper surface of the lower horizontal plate can be moved with the vertical plate sandwiched between the upper part and the weight of the belt conveyor device is received by the upper surface of the lower horizontal plate. Since a belt conveyor suspension member having a rotatable wheel as a moving body that functions as a locking member to be used is used, suspension work can be easily performed, and formation of a suspension rail for mobile work can be easily performed. It becomes like this.
According to the fourth aspect , since the traction device that uses the suspension rail for moving work as a reaction force receiver is used, the traction device can be reduced in size and can be easily pulled.
According to the fifth aspect , the belt conveyor device and the earth and sand loader can be started and stopped in conjunction with each other, and the loading operator can be prompted to stop and start the loading operation.
[Brief description of the drawings]
FIG. 1 is a view showing a state in a construction tunnel in which construction work is being performed using the excavated earth and sand transfer device according to the embodiment of the present invention.
2A is a cross-sectional view taken along the line AA in FIG. 1, FIG. 2B is a cross-sectional view taken along the line BB in FIG. 1, and FIG.
FIG. 3 is a partially enlarged view of FIG. 1;
4 is an enlarged view of a rail hanging member, a unit rail material, and a belt conveyor hanging member in FIG. 3. FIG.
FIG. 5 is an enlarged view of a DD cross section in FIG. 3;
FIG. 6 is a diagram for explaining settings at the time of moving work.
[Explanation of symbols]
1 belt conveyor device, 2 support means, 3 suspension rail, 3A suspension rail for moving work, 4 rail suspension member, 5 belt conveyor suspension member,
30 unit rail material, 30a vertical plate, 30b upper horizontal plate, 30c lower horizontal plate, 30d lower surface of upper horizontal plate, 30e upper surface of lower horizontal plate, 44 gripping locking member,
43 Turnbuckle (length adjusting means), 50 wheels (moving body),
60, 61 Traction connecting member, 91 fixed sheave block, 92 moving sheave block, 93 winch device, 110 belt conveyor drive control device,
X Drilling tip, Z wellhead.

Claims

A plurality of sediment to extend the belt conveyor having a predetermined length in sediment transport length provided is to extend from the drilling tip section side in order to transfer the wellhead side wellhead direction, from the drilling tip section side wellhead side A plurality of units for suspending the belt conveyor device on the suspension rail and a suspension rail formed by connecting the unit rail members to each other and suspended in the tunnel hole and a movable body movable through the suspension rail. A belt conveyor suspension member, a traction connection member that connects the upper sides of the plurality of belt conveyor suspension members, and an arbitrary number of unit rails removed from the wellhead side after excavation on the excavation tip portion side proceeds. The excavation process consists of a suspension rail for moving work connected to the excavation tip part side of the suspension rail and a belt conveyor suspension member on the excavation tip part side. The moving body of the belt conveyor suspension member and the subsequent belt conveyor suspension member is moved in the direction of excavation through the moving work suspension rail and suspended by a plurality of belt conveyor suspension members. A digging earth and sand transporting device, comprising: a traction means for moving the belt conveyor device to the digging progress direction side.

Comprising a rail suspension member suspending the unit rail material into the tunnel bore, these rail hanging member according to claim 1, characterized in that it comprises a length adjusting means for adjusting the length hanging Drilling earth and sand transfer device.

The unit rail member is composed of a long bar having an I-shaped cross section provided with a vertical plate and upper and lower horizontal plates provided above and below the vertical plate, and the rail suspension member is suspended from the upper surface in the tunnel hole. By supporting the lower surface of the upper horizontal plate with the locking member provided on the lower end side, the unit rail material is supported in a suspended state, and the belt conveyor hanging member is sandwiched between the vertical plate at the upper part 3. A rotatable wheel as a moving body that is arranged and is movable on the upper surface of the lower horizontal plate and functions as a locking member that receives the weight of the belt conveyor device on the upper surface of the lower horizontal plate. The excavation earth and sand transfer device described in 1.

Traction means, excavating soil transfer device according to any one of claims 1 to 3, characterized in that the hanging mobile work rail is traction device for use as a reaction force receiver.

The belt conveyor device includes a belt conveyor drive control device on the terminal side located on the wellhead side, and this belt conveyor drive control device is connected to the control device of the earth and sand loader installed in the tunnel hole by a communication line or wirelessly, When instructed to stop the conveyor via the belt conveyor drive control device, the belt conveyor drive control device sends a stop signal to the control device of the earth and sand loader to stop the earth and sand loader, and the control device of the earth and sand loader The display control signal is sent to the display means such as a lamp provided in the earth and sand loader to indicate the stop of loading, and when the conveyor activation is instructed via the belt conveyor drive control device, the belt conveyor drive The control device sends a start signal to the control device of the earth and sand loader to start the earth and sand loader, It sends a display control signal to the control device for sand loader, any of claims 1 to 4, characterized in that to perform display indicating the loading permission display means such as a lamp provided in the sediment palletizer The excavation earth and sand transfer device described in 1.