JP4557931B2 - Excavator body recovery device in tunnel excavator - Google Patents

Excavator body recovery device in tunnel excavator Download PDF

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JP4557931B2
JP4557931B2 JP2006187155A JP2006187155A JP4557931B2 JP 4557931 B2 JP4557931 B2 JP 4557931B2 JP 2006187155 A JP2006187155 A JP 2006187155A JP 2006187155 A JP2006187155 A JP 2006187155A JP 4557931 B2 JP4557931 B2 JP 4557931B2
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excavator
shell
rail
partition
tunnel
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JP2008014044A (en
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敏雄 長江
智久 星
弘美 佐藤
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株式会社奥村組
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本発明は、トンネル掘削機によって地中にトンネルを掘削しながら所定長の管路を形成したのちに、該管路内を通じて掘削機本体を回収、撤去するトンネル掘削機における掘削機本体の回収装置に関するものである。   The present invention relates to an excavator body recovery device in a tunnel excavator that collects and removes an excavator body through the pipe after a predetermined length of pipe is formed while excavating a tunnel in the ground with a tunnel excavator. It is about.
発進立坑側からトンネル掘削機によって地中にトンネルを掘削しながら該掘削壁面にトンネル覆工体を施工することにより管路を形成していくトンネル工事においては、該トンネル掘削機が到達立坑に達すると、この到達立坑内から地上に回収して再利用することが行われているが、到達側に既存の人孔が設けられていたり、周辺に建物等が存在していて到達立坑が設けられない場合や2基のトンネル掘削機を地中でドッキングさせる場合のように到達立坑を設けない場合、或いは、到達立坑が未完成の場合や既設の長い管路にトンネル掘削機を直交させるように到達させた場合等には、トンネル掘削機を発進立坑側に向かって後退させて回収しなければならない。   In tunnel construction in which a tunnel is formed on the wall of the excavation wall while excavating the tunnel underground from the start shaft side with a tunnel excavator, the tunnel excavator reaches the reaching shaft. Then, it is carried out on the ground from this reach shaft and reused, but there is an existing human hole on the arrival side, or there is a building etc. in the vicinity and a reach shaft is provided. If there is no reaching shaft as in the case where there are no tunnel excavators or when two tunnel excavators are docked in the ground, or if the reaching shaft is not completed or the tunnel excavator is orthogonal to the existing long pipeline When it is reached, the tunnel excavator must be withdrawn toward the start shaft side and collected.
このような回収型のトンネル掘削機としては、例えば、特許文献1に記載されているように、外径が上記管路と略同一外径を有する円筒形状の外殻体と、この外殻体内に配設された掘削機本体とからなり、この掘削機本体は上記管路の内径よりも小径に形成され且つ上記外殻体内に後方に向かって引き出し可能に連結、支持されている内殻体を備えていると共に、この内殻体の前部に一体に設けている隔壁に外径が管路の内径よりも縮小可能なカッタヘッドを回転自在に支持させてあり、さらに、このカッタヘッドの駆動手段と、カッタヘッドによって掘削された掘削土砂の搬出手段とを備えた構造を有している。   As such a recovery-type tunnel excavator, for example, as described in Patent Document 1, a cylindrical outer shell whose outer diameter is substantially the same as that of the pipe, The excavator body is formed with a diameter smaller than the inner diameter of the conduit, and is connected to and supported by the outer shell body so that it can be pulled out rearward. A cutter head whose outer diameter is smaller than the inner diameter of the pipe is rotatably supported by a partition wall provided integrally with the front portion of the inner shell body. It has a structure including drive means and means for carrying out excavated earth and sand excavated by the cutter head.
そして、このトンネル掘削機によって所定長さまでトンネルを掘削すると、該トンネル掘削機に後続している油圧機器類等の設備を搭載した台車や覆工設備材料を搭載した台車等を発進立坑側に回収したのちこれらの台車の走行用軌条を全て撤去する一方、トンネル掘削機のカッタヘッドをトンネル覆工体の内径以下にまで縮径させたのち、外殻体を掘削壁面に残した状態で該外殻体から掘削機本体の内殻体を外殻体の後部内に引き込み、内殻体の下側周面にガイドローラを装着したのち、掘削機本体を後方に牽引することにより、該ガイドローラを管路の内底面上で転動させながら掘削機本体を発進立坑側に向かって回収するように構成している。
特開2004−346688号公報
Then, when the tunnel is excavated to a predetermined length by this tunnel excavator, the bogie equipped with equipment such as hydraulic equipment following the tunnel excavator and the carriage equipped with lining equipment materials are collected on the start shaft side. After that, all the running rails of these trucks are removed, while the cutter head of the tunnel excavator is reduced to the inner diameter of the tunnel lining body, and the outer shell remains on the excavation wall surface. By pulling the inner shell body of the excavator body from the shell body into the rear part of the outer shell body, attaching the guide roller to the lower peripheral surface of the inner shell body, and then pulling the excavator body backward, the guide roller The excavator body is collected toward the start shaft side while rolling on the inner bottom surface of the pipe.
JP 2004-346688 A
しかしながら、上記のようなトンネル掘削機における掘削機本体の回収方法によれば、管路内に敷設している軌条を撤去するまで掘削機本体の回収作業を行うことができないために、回収作業に手間を要するばかりでなく、軌条を撤去してしまうと、例えば、掘削壁面に残しておく上記外殻体の内周面に対するコンクリート打設作業時に、その打設設備の搬入、搬出用として利用できなくなる。さらに、掘削機本体の下側周面に搬送手段としてガイドローラを装着し、このガイドローラを管路の内底面上で転動させながら掘削機本体を回収するものであるから、ガイドローラによって管路の内底面が損傷する虞れがある。   However, according to the excavator body recovery method in the tunnel excavator as described above, the excavator body cannot be recovered until the rails laid in the pipeline are removed. Not only is it time-consuming, but if the rail is removed, it can be used, for example, for loading and unloading the casting equipment when placing concrete on the inner peripheral surface of the outer shell that is left on the excavation wall. Disappear. Further, a guide roller is mounted on the lower peripheral surface of the excavator body as a conveying means, and the excavator body is recovered while rolling the guide roller on the inner bottom surface of the pipe. The inner bottom surface of the road may be damaged.
また、掘削機本体の内殻体の長さが短い場合には、該内殻体の下周面の前後両側部にガイドローラが装着可能な面積を確保する事が困難であり、また、例え、ガイドローラを装着できたとしても、これらのガイドローラによる掘削機本体の支持が不安定となって、回収作業に困難をきたすといった問題点があった。   In addition, when the length of the inner shell of the excavator body is short, it is difficult to secure an area where guide rollers can be mounted on both the front and rear sides of the lower peripheral surface of the inner shell. Even if the guide rollers can be mounted, the support of the excavator main body by these guide rollers becomes unstable, and there is a problem that the recovery operation becomes difficult.
本発明はこのような問題点に鑑みてなされたもので、その目的とするところは、トンネル掘削機によってトンネルを掘削しながら所定長の管路を形成したのち、管路内に敷設している軌条を撤去することなく、その軌条を利用して掘削機本体を安定した搬送状態で且つ管路を損傷させることなく能率よく回収することができるトンネル掘削機における掘削機本体の回収装置を提供するにある。   The present invention has been made in view of such problems, and its object is to form a predetermined length of a pipeline while excavating the tunnel with a tunnel excavator and then lay it in the pipeline. Provided is an excavator body recovery device in a tunnel excavator that can efficiently recover an excavator body in a stable transport state and without damaging a pipe line without removing the rail. It is in.
上記目的を達成するために本発明のトンネル掘削機における掘削機本体の回収装置は、請求項1に記載したように、前端部内周面にリング状の第1隔壁を設けてなる外殻体と、この外殻体の第1隔壁に引き抜き可能に摺接、支持された内殻体を備えていると共に該内殻体の前端部に第2隔壁を一体に設けてこの第2隔壁の背面にカッタ板の回転駆動手段を装着してなる掘削機本体と、この掘削機本体に回転自在に支持されたカッ板とを備えてなるトンネル掘削機により、地中にトンネルを掘削しながら所定長の管路を形成したのち、この管路内を通じて上記掘削機本体を回収する際の回収装置であって、管路に予め敷設されている枕木とレールとからなる軌条と、カッタ板を取り外したのちの、又はカッタ板を縮径させたのちの掘削機本体を第1隔壁から後方の外殻体内に引き抜く引抜き手段と、外殻体の内底面上に設置されて第1隔壁から引き抜かれる掘削機本体を後方の外殻体内にガイドするガイド部材と、このガイド部材上の掘削機本体を上記軌条より上方位置まで持ち上げるリフト手段と、外殻体の内底面上に設置されて上記軌条の前端にその後端を接続させる引出し用レールと、この引出し用レール上で上記リフト手段により持ち上げられている掘削機本体を受け取って上記軌条上を走行する搬送手段とから構成している。   In order to achieve the above object, an excavator body recovery device in a tunnel excavator according to the present invention comprises, as described in claim 1, an outer shell body provided with a ring-shaped first partition wall on an inner peripheral surface of a front end. And an inner shell body that is slidably contacted and supported by the first partition wall of the outer shell body, and a second partition wall is integrally provided at the front end of the inner shell body, and is provided on the back surface of the second partition wall. A tunnel excavator comprising an excavator body equipped with a rotation driving means for the cutter plate and a cutter plate rotatably supported by the excavator body, while excavating the tunnel in the ground, has a predetermined length. After forming the pipeline, it is a collection device when collecting the excavator main body through this pipeline, and the rail composed of sleepers and rails pre-laid in the pipeline and the cutter plate were removed The excavator body after cutting the diameter of the A pulling means for pulling out from the first bulkhead into the rear shell body, a guide member installed on the inner bottom surface of the outer shell body and guiding the excavator body pulled out from the first bulkhead into the rear shell body, and the guide member Lift means for lifting the upper excavator body to a position above the rail, a drawer rail installed on the inner bottom surface of the outer shell body and connecting the rear end to the front end of the rail, and the above-mentioned rail on the rail The excavator main body lifted by the lift means is received and transported on the rail.
このように構成したトンネル掘削機における掘削機本体の回収装置において、請求項2に係る発明は、上記引出し用レールの高さを軌条の高さから引抜き時の掘削機本体の内殻体の外底面の高さにまで変更可能に構成していることを特徴とする。   In the excavator body recovery device in the tunnel excavator configured as described above, the invention according to claim 2 is directed to the outside of the inner shell of the excavator body when the height of the drawer rail is pulled out from the height of the rail. It is characterized in that it can be changed to the height of the bottom surface.
請求項3に係る発明は、上記請求項1に係る発明において、引出し用レールを使用することなく掘削機本体を回収できるように構成しているものであって、前端部内周面にリング状の第1隔壁を設けてなる外殻体と、この外殻体の第1隔壁に引き抜き可能に摺接、支持された内殻体を備えていると共に該内殻体の前端部に第2隔壁を一体に設けてこの第2隔壁の背面にカッタ板の回転駆動手段を装着してなる掘削機本体と、この掘削機本体に回転自在に支持されたカッ板とを備えてなるトンネル掘削機により、地中にトンネルを掘削しながら所定長の管路を形成したのち、この管路内を通じて上記掘削機本体を回収する際の回収装置であって、管路に予め敷設されている枕木とレールとからなる軌条と、カッタ板を取り外したのちの、又はカッタ板を縮径させたのちの掘削機本体を第1隔壁から後方の外殻体内に引き抜く引抜き手段と、外殻体の内底面上に設置されて第1隔壁から引き抜かれる掘削機本体を後方の外殻体内に案内し、且つ、上記軌条の高さにまで上昇可能に構成されているガイド部材と、このガイド部材上に引き出された掘削機本体を上記軌条より上方位置まで持ち上げるリフト手段と、軌条の高さまで上昇したガイド部材上で上記リフト手段により持ち上げられている掘削機本体を受け取って上記軌条上を走行する搬送手段とからなることを特徴とする。   The invention according to claim 3 is configured so that the excavator main body can be recovered without using the drawer rail in the invention according to claim 1, and the ring is formed on the inner peripheral surface of the front end portion. An outer shell body provided with a first partition wall, an inner shell body that is slidably contacted and supported by the first partition wall of the outer shell body, and a second partition wall is provided at the front end of the inner shell body By a tunnel excavator comprising an excavator body provided integrally and mounted with a rotation driving means for the cutter plate on the back surface of the second partition wall, and a cutting plate rotatably supported by the excavator body, A recovery device for recovering the excavator body through the pipe after forming a predetermined length of the pipe while excavating the tunnel in the ground, and sleepers and rails previously laid in the pipe Or after removing the cutter plate and the cutter plate Pulling out the excavator main body after reducing the diameter of the plate into the outer shell behind the first bulkhead, and the excavator main body installed on the inner bottom surface of the outer shell and pulled out from the first bulkhead rearward A guide member configured to be guided into the outer shell body and to be raised to the height of the rail, and lift means for lifting the excavator body drawn on the guide member to a position above the rail. And a conveying means for receiving the excavator body lifted by the lifting means on the guide member raised to the height of the rail and traveling on the rail.
上記請求項1又は請求項3に記載の発明において、請求項4に係る発明は、上記リフト手段に掘削機本体を吊り上げた状態で前後方向に90度、回転させる機能を備えさせていることを特徴とする。   In the invention according to claim 1 or claim 3, the invention according to claim 4 is provided with a function of rotating the excavator body 90 degrees in the front-rear direction in a state where the excavator body is lifted. Features.
請求項1に係る発明によれば、トンネル掘削機によって地中にトンネルを掘削しながら所定長の管路を形成したのち、トンネル掘削機の外殻体の第1隔壁から引き抜かれた掘削機本体をこの管路内を通じて回収する際の回収装置であって、管路に予め敷設されている枕木とレールとからなる軌条と、カッタ板を取り外したのちの、又はカッタ板を縮径させたのちの掘削機本体を第1隔壁から後方の外殻体内に引き抜く引抜き手段と、外殻体の内底面上に設置されて第1隔壁から引き抜かれる掘削機本体を後方の外殻体内にガイドするガイド部材とを設けているので、第1隔壁から引き抜かれる掘削機本体をそのままガイド部材上に滑らすようにして容易に且つ確実に載置させることができる。   According to the first aspect of the present invention, the excavator main body pulled out from the first bulkhead of the outer shell of the tunnel excavator after forming a predetermined length of the pipeline while excavating the tunnel in the ground with the tunnel excavator Is a recovery device for recovering through the inside of this pipe line, the rail composed of sleepers and rails laid in advance in the pipe line, and after removing the cutter plate or reducing the diameter of the cutter plate Pulling means for pulling out the main body of the excavator from the first bulkhead into the rear shell body, and a guide for guiding the excavator body installed on the inner bottom surface of the outer shell body and pulled out from the first bulkhead into the rear shell body Since the member is provided, the excavator body pulled out from the first partition can be easily and reliably placed on the guide member as it is.
さらに、このガイド部材上の掘削機本体を上記軌条より上方位置まで持ち上げるリフト手段と、外殻体の内底面上に設置されて上記軌条の前端にその後端を接続させる引出し用レールと、この引出し用レール上で上記リフト手段により持ち上げられている掘削機本体を受け取って上記軌条上を走行する台車等の搬送手段とを配設しているので、リフト手段により掘削機本体を持ち上げて上記引き出し用レールと掘削機本体の内殻体との間に搬送手段が進入可能な空間を容易に形成することができると共に、この空間の高さを搬送手段の掘削機本体受止面がリフトによって持ち上げられている掘削機本体の下端面にできるだけ接近する低い高さとなるように正確に形成することができ、従って、トンネル掘削機の狭い外殻体内においても、搬送手段による掘削機本体の搬送を可能にすることができる。   Further, lift means for lifting the excavator body on the guide member to a position above the rail, a drawer rail installed on the inner bottom surface of the outer shell body and connecting the rear end to the front end of the rail, and the drawer Since the excavator main body lifted by the lift means on the rail is received and transport means such as a carriage that travels on the rail is disposed, the excavator main body is lifted by the lift means for the drawer. A space into which the conveying means can enter can be easily formed between the rail and the inner shell of the excavator body, and the excavator body receiving surface of the conveying means can be lifted by a lift. It can be accurately formed to be as low as possible as close as possible to the lower end surface of the excavator body, so it can be transported even in the narrow shell of the tunnel excavator It can allow the transport of the excavator body by stages.
その上、上記引き出し用レールは軌条の前端にその後端を接続させているので、搬送手段を軌条上からこの引き出し用レール上に連続的に搬入することができると共に、掘削機本体の受け取り位置に簡単且つ正確に配置させることができて上記リフト手段により持ち上げられている掘削機本体をこの搬送手段上に能率よく積み込むことができ、この状態にして搬送手段を軌条上を走行させながら、発進立坑側に搬出することができる。このように、管路内に敷設している軌条を撤去することなく、該軌条を利用して掘削機本体を搬送手段により回収することができ、従って、管路の内壁面を損傷させたりすることなく、掘削機本体の回収作業が円滑且つ能率よく行える。   In addition, since the pull-out rail has a rear end connected to the front end of the rail, the conveying means can be continuously carried onto the pull-out rail from the rail, and at the receiving position of the excavator body. The excavator body that can be easily and accurately arranged and lifted by the lifting means can be efficiently loaded onto the conveying means, and in this state, while the conveying means is running on the rail, Can be carried out to the side. In this way, the excavator body can be recovered by the conveying means using the rail without removing the rail laid in the pipeline, and therefore the inner wall surface of the pipeline can be damaged. Therefore, the excavator body can be collected smoothly and efficiently.
上記請求項1に記載の回収装置において、請求項2に係る発明によれば、上記引出し用レールの高さを軌条の高さから引抜き時の掘削機本体の内殻体の外底面の高さにまで変更可能に構成しているので、トンネル掘削機の第1隔壁から掘削機本体をガイド部材上に引き出す際に、この引き出し用レールの高さを掘削機本体の内殻体の外底面の高さに設定しておくことによって掘削機本体の引出し作業に何ら邪魔になることなくトンネル掘削機の外殻体の内底面上にガイド部材と共に設置しておくことができ、その上、ガイド部材上からリフト手段によって持ち上げられたのちにおいては、直ちにその高さを引き出し用レールの高さにまで上げてリフト手段からこの引き出し用レール上への掘削機本体の受け渡し作業が円滑且つ能率良く行うことができる。   In the recovery apparatus according to claim 1, according to the invention according to claim 2, the height of the outer bottom surface of the inner shell of the excavator body when the height of the drawer rail is pulled from the height of the rail. Therefore, when the excavator body is pulled out from the first partition wall of the tunnel excavator onto the guide member, the height of the pull-out rail is set to the outer bottom surface of the inner shell of the excavator body. By setting the height, it can be installed with the guide member on the inner bottom surface of the outer shell of the tunnel excavator without interfering with the drawing work of the excavator body, and in addition, the guide member After being lifted by the lift means from above, the height is immediately raised to the height of the drawer rail, so that the excavator body can be smoothly and efficiently transferred from the lift means onto the drawer rail. Can.
請求項3に係る発明によれば、上記請求項1に記載の掘削機本体の回収装置において、引き出し用レールを使用することなく、ガイド部材にこの引き出し用レールの機能を兼備させているものであって、該ガイド部材を上記軌条の高さにまで上昇可能に構成し、この上昇したガイド部材上に軌条から台車等の搬送手段を進入させてリフト手段により持ち上げられている掘削機本体をこの搬送手段上に積みおろすように構成しているので、回収装置の構造の簡素化を図ることができると共にその設置作業も迅速に行えて回収作業が能率よく行うことができる。なお、このガイド部材上に後端が上記軌条の前端に接続可能なレール部材を敷設しておくことが望ましい。   According to the invention according to claim 3, in the excavator body recovery device according to claim 1, the guide member has the function of the drawer rail without using the drawer rail. The guide member is configured to be able to be raised to the height of the rail, and the excavator body that is lifted by the lift means by allowing a conveying means such as a carriage to enter from the rail on the raised guide member. Since it is configured to be loaded and unloaded on the conveying means, the structure of the collection device can be simplified, and the installation work can be performed quickly and the collection work can be performed efficiently. It is desirable that a rail member whose rear end can be connected to the front end of the rail is laid on the guide member.
また、上記請求項1又は請求項3に記載した掘削機本体の回収装置において、請求項4に係る発明は、上記リフト手段に、掘削機本体を吊り上げた状態で前後方向に90度、回転させる機能を備えさせているので、トンネル掘削機における狭い外殻体内であっても、掘削機本体を宙吊りにした状態を保持しながらその位置で伏臥又は仰臥状態の姿勢に変更することができ、この姿勢でもって搬送手段上にガタツキや妄動を殆ど生じさせることのない安定した状態に載置して容易に回収することができる。   Further, in the excavator body recovery device according to claim 1 or claim 3, the invention according to claim 4 is such that the lift means rotates the excavator body 90 degrees in the front-rear direction with the excavator body suspended. Because it is equipped with a function, even in a narrow shell in a tunnel excavator, it can be changed to a prone or supine posture at that position while maintaining the excavator body suspended. It can be easily recovered by placing it in a stable state with little posture or numbness on the conveying means in the posture.
次に本発明の具体的な実施の形態を図面について説明すると、図1はトンネルTを掘削しながらその掘削壁面にセグメント等のトンネル覆工体からなる管路Sを施工していくトンネル掘削機の簡略縦断面図であって、このトンネル掘削機は、外径がトンネル掘削径と略同径の円筒形状の外殻体1と、この外殻体1の前端部内周面にその外周端面を溶接等により一体に固着していると共に内周端面に前後方向に開口した円環部2aの前端部外周面を溶接等により一体に固着してなるリング状の第1隔壁2と、この第1隔壁2の円環部2aに後方に向かって引き込み可能に嵌合、支持されている掘削機本体3と、掘削機本体3に回転自在に支持されたカッタ板4と、このカッタ板4の回転駆動手段5とを備えてあり、第1隔壁2の円環部2aの内径は上記管路Sの内径よりも小径に形成されている。   Next, a specific embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a tunnel excavator that constructs a pipe line S made of a tunnel lining body such as a segment on the excavation wall surface while excavating the tunnel T. The tunnel excavator has a cylindrical outer shell 1 whose outer diameter is substantially the same as the tunnel excavating diameter, and an outer peripheral end face on the inner peripheral surface of the front end portion of the outer shell 1. A ring-shaped first partition wall 2 that is integrally fixed by welding or the like, and is formed by integrally fixing the outer peripheral surface of the front end portion of the annular portion 2a that opens in the front-rear direction to the inner peripheral end surface by welding or the like. The excavator body 3 is fitted and supported so as to be retractable toward the annular portion 2 a of the partition wall 2, the cutter plate 4 is rotatably supported by the excavator body 3, and the cutter plate 4 is rotated. Driving means 5, and the inner diameter of the annular portion 2 a of the first partition 2 is It has a smaller diameter than the inner diameter of road S.
上記掘削機本体3は、上記第1隔壁2の円環部2aの内周面にその外周面を後方に引き出し可能に摺接させていると共に円環部2aと略同一長さを有し、且つ、該円環部の前端縁にその前端縁をボルトによって着脱自在に連結している円環形状の内殻体6と、この内殻体6の前端にその外周端を固着して該内殻体6と一体に設けられている円板形状の第2隔壁7と、この第2隔壁7の背面に装着された上記回転駆動手段5とからなり、この回転駆動手段5は第2隔壁7の背面に一体に設けているハウジング8内に配設された噛合歯車機構(図示せず)と、ハウジング8の背面に取付けられた駆動モータ5aとから構成されていて駆動モータ5aによって噛合歯車機構を介して掘削機本体3の中心部に回転自在に支持されている上記カッタ板4の回転軸11を回転させるように構成している。   The excavator main body 3 is slidably contacted with the inner peripheral surface of the annular portion 2a of the first partition wall 2 so that the outer peripheral surface can be pulled out rearward, and has substantially the same length as the annular portion 2a. An annular inner shell 6 in which the front end edge is detachably connected to the front end edge of the annular portion by a bolt, and an outer peripheral end is fixed to the front end of the inner shell 6 and the inner end is fixed. The disk-shaped second partition wall 7 provided integrally with the shell body 6 and the rotation driving means 5 mounted on the back surface of the second partition wall 7 include the second partition wall 7. A meshing gear mechanism (not shown) disposed in the housing 8 provided integrally with the back surface of the housing 8 and a drive motor 5a attached to the back surface of the housing 8 are configured by the drive motor 5a. The rotary shaft 11 of the cutter plate 4 supported rotatably at the center of the excavator body 3 via It is configured to rotate.
このカッタ板4は外径が上記第1隔壁2の円環部2aよりも小径であって該円環部2aを通過可能な径に形成された円板形状の中央カッタ板部4aと、この中央カッタ板部4aの外周面に内周面を嵌合させたボルトにより着脱自在に結合している円環形状の外周カッタ板部4bと、この外周カッタ板部4bの外周面にボルトにより結合している外周リング部4cとからなり、該外周カッタ板部4bの外周リング部4cの外径はトンネル掘削機の外殻体1の外径に等しい径に形成されている。なお、中央カッタ板部4aはその中心部を上記第2隔壁7から前方に突出している上記回転軸11の先端にその中心部をボルト等を介して取り外し可能に嵌合、固定されている。また、上記外周カッタ板部4bは周方向に複数分割されていて互いに分解可能にボルトによって連結している。   The cutter plate 4 has a disc-shaped central cutter plate portion 4a having an outer diameter smaller than the annular portion 2a of the first partition wall 2 and having a diameter that can pass through the annular portion 2a, An annular outer cutter plate portion 4b that is detachably connected by a bolt having an inner peripheral surface fitted to the outer peripheral surface of the central cutter plate portion 4a, and a bolt connected to the outer peripheral surface of the outer cutter plate portion 4b. The outer peripheral ring portion 4c is formed so that the outer diameter of the outer peripheral ring portion 4c of the outer peripheral cutter plate portion 4b is equal to the outer diameter of the outer shell 1 of the tunnel excavator. The central cutter plate portion 4a is fitted and fixed to the tip of the rotating shaft 11 projecting forward from the second partition wall 7 through a bolt or the like. Further, the outer cutter plate part 4b is divided into a plurality of parts in the circumferential direction and is connected to each other by bolts so as to be disassembled.
さらに、このカッタ板4の前面には多数本のカッタビット9を前方に向かって突設していると共に中心部から外周端部に向かって複数の土砂取込み開口部4dを放射状に設けてあり、この土砂取込み開口部4dをカッタ板4の背面と上記の互いにその前面を略同一垂直面上に位置させている第1隔壁2と第2隔壁7との前面との間の空間部によって形成している土砂取込室10に連通させている。   Further, on the front surface of the cutter plate 4, a large number of cutter bits 9 are projected forward and a plurality of earth taking-in openings 4d are provided radially from the center portion toward the outer peripheral end portion, The earth and sand intake opening 4d is formed by a space between the back surface of the cutter plate 4 and the front surface of the first partition wall 2 and the second partition wall 7 with the front surfaces thereof being located on substantially the same vertical plane. The earth and sand take-up room 10 is connected.
また、掘削機本体3の背面外周部数カ所に断面L字状の反力受止部材12の垂直板部をボルトによって着脱自在に取付けると共にこれらの反力受止部材12の水平板部をそれぞれ外殻体1の内周面数カ所に固着した固定材12' にボルトにより着脱自在に固着して、これらの反力受止部材12により外殻体1と掘削機本体3とを切り離し可能に連結している。   Further, the vertical plate portions of the reaction force receiving member 12 having an L-shaped cross section are removably attached to the excavator main body 3 at several locations on the outer periphery of the back surface by bolts, and the horizontal plate portions of these reaction force receiving members 12 are respectively removed. The outer shell 1 and the excavator main body 3 are detachably connected to the fixing member 12 'fixed to several locations on the inner peripheral surface of the shell 1 by bolts, and the reaction force receiving member 12 detachably connects the outer shell 1 and the excavator main body 3. ing.
外殻体1は前胴部1aと後胴部1bとに分割されていて中折れ部13を介して前胴部1aの後端部と後胴部1bの前端部とを互いに屈折自在に連結していると共に後胴部1bの前端部内周面にリングガータ14を固着してこのリングガータ14に周方向に一定間隔毎に複数本の推進ジャッキ15を挿通状態で支持させてあり、これらの推進ジャッキ15のロッド先端を上記管路Sの前端面に当接させてこの管路Sに反力をとって伸長させることによりトンネル掘削機を推進させるように構成している。   The outer shell body 1 is divided into a front body portion 1a and a rear body portion 1b, and the rear end portion of the front body portion 1a and the front end portion of the rear body portion 1b are connected to each other through a bent portion 13 so as to be refractable. The ring garter 14 is fixed to the inner peripheral surface of the front end portion of the rear trunk 1b, and a plurality of propulsion jacks 15 are supported in the ring garter 14 at regular intervals in the circumferential direction. The forward end of the rod of the propulsion jack 15 is brought into contact with the front end surface of the pipe S, and the tunnel excavator is propelled by extending the pipe S by taking a reaction force.
さらに、上記中折れ部13を介して前胴部1aと後胴部1bとの内周面間を周方向に一定間隔毎に配設した複数本の中折れジャッキ16によって連結していると共に、前胴部1aの前部内に掘削壁面にセグメントを組立てて上記トンネル覆工体からなる管路Sを形成するエレクタ17を配設してあり、また、上記土砂取込室10から掘削土砂を排出する排土手段である送泥管18と排泥管19とを設けている。   Further, the inner peripheral surface of the front body part 1a and the rear body part 1b are connected by a plurality of middle folding jacks 16 arranged at regular intervals in the circumferential direction via the middle folding part 13, and An erector 17 is arranged in the front part of the front body 1a to assemble a segment on the excavation wall surface to form a pipe S composed of the tunnel lining body, and the excavated sediment is discharged from the sediment intake chamber 10 A mud pipe 18 and a mud pipe 19 are provided as soil discharging means.
このように構成したトンネル掘削機は発進立坑(図示せず)内に設置され、該カッタ板4を回転させながら所定方向にトンネルTを掘進していく。そして、一定長のトンネルを掘削する毎に、エレクタにより掘削壁面にセグメントを組み立てて掘削壁面を覆工し、このトンネル覆工体からなる管路Sの前端面に上記推進ジャッキ15の推進反力を受止させて、該推進ジャッキ15を伸長させることによりトンネル掘削機Aを前進させる。この時、推進ジャッキ15による推進力は外殻体1から上記反力受止部材12を介して掘削機本体3に伝達され、カッタ板4を切羽に押しつけながら地山を掘削すると共に、カッタ板4の回転反力はこの反力受止部材12を介して外殻体1に受止させて掘削機本体3のローリングの発生を防止しながら掘進する。カッタ板4によって掘削された土砂は土砂取込室10内に取り込まれ、この土砂取込室10に連通している上記送排泥管18、19による還流泥水によって泥水と共にトンネル内を通じて地上に排出される。   The tunnel excavator configured as described above is installed in a start shaft (not shown), and excavates the tunnel T in a predetermined direction while rotating the cutter plate 4. Each time a certain length of tunnel is excavated, segments are assembled on the excavation wall surface by an erector to cover the excavation wall surface, and the propulsion reaction force of the propulsion jack 15 is applied to the front end surface of the pipe line S composed of the tunnel lining body. The tunnel excavator A is moved forward by extending the propulsion jack 15. At this time, the propulsive force by the propulsion jack 15 is transmitted from the outer shell body 1 to the excavator main body 3 through the reaction force receiving member 12, excavating the natural ground while pressing the cutter plate 4 against the face, and the cutter plate The rotational reaction force 4 is received by the outer shell body 1 through the reaction force receiving member 12 and digs while preventing the rolling of the excavator body 3. The earth and sand excavated by the cutter plate 4 is taken into the earth and sand intake chamber 10 and discharged to the ground through the tunnel along with the muddy water by the return mud pipes 18 and 19 communicating with the earth and sand intake chamber 10. Is done.
こうしてトンネル掘削機によって所定位置まで掘削壁面にセグメントによる覆工を行いながら該セグメント覆工体からなる所定長の管路Sを形成したのち、該管路S内を通じて発進立坑側まで掘削機本体3を回収する作業に移る。   In this way, the tunnel excavator forms a pipe S of a predetermined length composed of the segment lining body while lining the excavation wall surface to a predetermined position with the segment, and then the excavator body 3 through the pipe S to the start shaft side. Move to work to collect.
この掘削機本体3の回収装置としては、図2、図3に示すように、上記管路S内にトンネル掘削機の後続台車の移動用として予め敷設されている軌条20と、図示していないが掘削機本体3を外殻体1の第1隔壁2の円環部2aから外殻体1の前胴部1a内にワイヤロープ等を介して牽引することにより引き抜く引抜き手段と、引き抜かれる掘削機本体3を支持するガイド部材21と、このガイド部材21上の掘削機本体3を吊支し、且つ、宙吊り状態で該掘削機本体3を上下方向に90度回転させる機能を備えた複数のチエーンブロックからなるリフト手段22と、90度回転させられた掘削機本体3を載置して上記軌条20上を発進立坑に向かって移動する搬送台車23からなる搬送手段と、上記外殻体1の内底面上に上記ガイド部材21よりも僅かに低い高さから上記軌条の高さにまで変更可能に構成して高くした際にその後端を上記軌条20の前端に接続させるようにしている短尺の引き出し用レール24とから構成している。   As shown in FIGS. 2 and 3, the recovery device for the excavator main body 3 is not shown in FIG. 2 and FIG. 3, and a rail 20 that is preliminarily laid in the pipe S for moving a subsequent carriage of the tunnel excavator. Pulls out the excavator main body 3 by pulling the excavator main body 3 from the annular portion 2a of the first partition wall 2 of the outer shell body 1 into the front body portion 1a of the outer shell body 1 through a wire rope, etc. A guide member 21 that supports the machine main body 3 and a plurality of functions that suspend and support the excavator main body 3 on the guide member 21 and rotate the excavator main body 3 up and down 90 degrees in a suspended state. Lift means 22 composed of a chain block; transport means comprising a carriage 23 on which the excavator body 3 rotated by 90 degrees is placed and moved on the rail 20 toward the start shaft; and the outer shell 1 From the slightly lower height than the guide member 21 on the inner bottom surface of the It is composed of a short pull-out rail 24 whose rear end is connected to the front end of the rail 20 when it is configured to be changeable up to the rail height.
上記軌条20は上記管路Sの内底面両側部間に架設、固定された状態で管路Sの長さ方向に一体間隔毎に配設された枕木2bとこの枕木2b上に固定された並設レール20b とからなり、上記トンネル掘削機により一定長のトンネル部が掘削される毎にその掘削長に応じて先に敷設した軌道に継ぎ足しながらこの軌道20上をセグメント台車やトンネル掘削機に後続して該トンネル掘削機と一体に前進する後続台車(図示せず)等を移動させるようにしてあり、その前端はトンネル掘削機の後胴部1bの後方近傍部に設けられている。   The rails 20 are installed between the both sides of the inner bottom surface of the pipe S, and the sleepers 2b arranged at intervals of one unit in the length direction of the pipe S and the parallels fixed on the sleepers 2b. Each time a tunnel part of a certain length is excavated by the tunnel excavator, the track 20 is followed by a segment cart or tunnel excavator while adding to the previously laid track according to the excavation length. Then, a subsequent carriage (not shown) or the like that moves forward together with the tunnel excavator is moved, and the front end thereof is provided in the vicinity of the rear of the rear trunk portion 1b of the tunnel excavator.
上記ガイド部材21は、前後方向に長い一定幅と長さを有する水平支持台21a の下面における前後端部と中間部とに短い一定長さを有する短い脚部21b を固着してなり、このガイド部材21を2台、外殻体1の前胴部1aの後部における下周部上に、周方向に所定の間隔を存して着脱自在に、且つ、その水平な上面が掘削機本体3の引出し時の下周部における前後両側部に装着した引出し用ローラ26と同一高さとなるように設置される。また、上記チエーンブロックからなるリフト手段22は外殻体1の前胴部1aの上周部内面における前部両側と後部両側、及び中間部両側とに配設されていてこれらのチエーンブロックのワイヤロープを掘削機本体3の前後面における上端両側部や後面における下端両側部に連繋等し、これらのヤイヤロープを引き出したり、巻き戻すことによって掘削機本体3を上下方向にその向きを変更させるように構成している。   The guide member 21 is formed by fixing short leg portions 21b having a short fixed length to the front and rear end portions and the intermediate portion of the lower surface of the horizontal support base 21a having a constant width and length long in the front-rear direction. Two members 21 are detachably mounted on the lower peripheral part of the rear part of the front body part 1a of the outer shell 1 at a predetermined interval in the circumferential direction, and the horizontal upper surface of the excavator body 3 It is installed so as to have the same height as the drawing rollers 26 mounted on both the front and rear sides of the lower peripheral portion at the time of drawing. Further, the lifting means 22 composed of the chain block is arranged on both the front side, the rear side, and the middle side on the inner surface of the upper body portion of the front shell portion 1a of the outer shell 1, and the wires of these chain blocks. The rope is connected to both the upper and lower ends on the front and rear surfaces of the excavator main body 3 and the lower end both sides on the rear surface, and the direction of the excavator main body 3 is changed in the vertical direction by pulling out or rewinding these ear ropes. It is composed.
搬送手段を構成している上記搬送台車23は、図4、図5に示すように、掘削機本体3の第2隔壁7の前面外周部を受止する多角形状の水平外枠23a とこの水平外枠23a の中央部に設けている矩形状の水平内枠23b とからなる載置台23' を備え、水平内枠23b は水平外枠23b よりも下方に小間隔を存して配設され、連結フレーム23c を介して水平外枠23a に一体に固着していると共に該水平内枠23b で囲まれた開口部23d 内に第2隔壁7から前方に突出した上記カッタ板4の回転軸11の前端軸部を挿通させた状態で支持するように構成している。さらに、この搬送台車23の下面における前後両側部に上記軌条20のレール20a 上を回転する車輪27を取付けていると共に、上記水平外枠23a の両側前後部から下方に向かって脚片28、28を突設し、この脚片28、28の下端に、上記両側車輪27の外側方における枕木20b の両側端部上面に近接した状態で枕木20b と直交する方向、即ちトンネル長さ方向に向けて水平状に配設した棒体からなる転倒防止用部材29、29を固着している。   As shown in FIGS. 4 and 5, the transport carriage 23 constituting the transport means includes a polygonal horizontal outer frame 23a for receiving the outer peripheral portion of the front surface of the second partition wall 7 of the excavator body 3, and the horizontal A mounting base 23 ′ composed of a rectangular horizontal inner frame 23b provided at the center of the outer frame 23a, the horizontal inner frame 23b being disposed at a small interval below the horizontal outer frame 23b, The rotating shaft 11 of the cutter plate 4 is fixed to the horizontal outer frame 23a through the connecting frame 23c and protrudes forward from the second partition 7 into the opening 23d surrounded by the horizontal inner frame 23b. The front end shaft portion is configured to be inserted and supported. Further, wheels 27 that rotate on the rail 20a of the rail 20 are attached to the front and rear sides of the lower surface of the transport carriage 23, and leg pieces 28, 28 are downwardly directed from the front and rear sides of the horizontal outer frame 23a. And projecting at the lower end of the leg pieces 28, 28 toward the direction perpendicular to the sleeper 20b in the state of being close to the upper surface of the both ends of the sleeper 20b on the outer side of the both side wheels 27, that is, toward the tunnel length direction. The members 29 and 29 for preventing toppling, which are horizontally disposed rods, are fixed.
引き出し用レール24は、図2、図3に示すように、その下端面における長さ方向の前後部と中間部とに一定長さ(高さ)の脚体30を固着してあり、この引き出し用レール24を2本、上記両側ガイド部材21、21間における外殻体1の前胴部1aの内底面上に周方向に上記軌条20の両側レール20a 、20a 間と同一幅間隔を存して着脱自在に設置している。さらに上記全ての脚体30は、上記ガイド部材21の高さよりも低い高さに形成された下側脚体部30a と、この下側脚体部30a の上端部に外側方に向かって折り畳み可能に枢着された上側脚体部30b とからなり、この上側脚体部30b をガイド部材21よりも上方に起立させることによって引き出し用レール24を上記軌条20のレール20a の前端面に突き合わせ状に連続させるように構成している。   As shown in FIGS. 2 and 3, the drawer rail 24 has legs 30 having a fixed length (height) fixed to the longitudinal front and rear and intermediate portions of the lower end surface thereof. Two rails 24 are provided on the inner bottom surface of the front body portion 1a of the outer shell 1 between the guide members 21 and 21 on both sides in the circumferential direction with the same width interval as that between the rails 20a and 20a of the rail 20 in the circumferential direction. It is installed detachably. Furthermore, all the legs 30 can be folded outwardly at the lower leg 30a formed at a height lower than the height of the guide member 21 and the upper end of the lower leg 30a. The upper leg 30b is pivotally attached to the upper end 30b, and the upper leg 30b is raised above the guide member 21 so that the pull-out rail 24 is abutted against the front end surface of the rail 20a of the rail 20. It is configured to be continuous.
このように構成した回収装置を使用して掘削機本体3を回収するには、まず、外殻体1内に配設している上記エレクタ17や送排泥管18、19、反力受止部材12等の解体や取り外しを行って発進立坑側に回収、撤去して図6に示すように、掘削機本体3の後方側に該掘削機本体3が引出し可能な空間部を設けたのち、掘削機本体3の後方における外殻体1の前胴部1aの内底部上に周方向に所定間隔を存して上記ガイド部材21、21を設置する。この際、ガイド部材21と共に上記引き出し用レール24、24も設置してその上側脚体部30b を掘削機本体3の引出しの邪魔にならないように外側方に折り畳んでおく。なお、この引き出し用レール24は掘削機本体3を上下方向に90度回転させる際に設置してもよい。また、上記エレクタ17や送排泥管18、19等は、トンネル掘削機の外殻体1の後端近傍部にまで敷設している上記軌条20上を走行する台車(図示せず)等に搭載して発進立坑側に回収、撤去する。   In order to recover the excavator body 3 using the recovery device configured as described above, first, the above-mentioned erector 17 and the supply / discharge mud pipes 18 and 19 disposed in the outer shell body 1 After disassembling and removing the member 12 and the like and collecting and removing it on the start shaft side, as shown in FIG. 6, after providing a space part where the excavator body 3 can be pulled out on the rear side of the excavator body 3, The guide members 21 and 21 are installed on the inner bottom portion of the front body portion 1a of the outer shell 1 at the rear of the excavator body 3 with a predetermined interval in the circumferential direction. At this time, the drawer rails 24, 24 are also installed together with the guide member 21, and the upper leg 30b is folded outward so as not to obstruct the extraction of the excavator body 3. The drawer rail 24 may be installed when the excavator body 3 is rotated 90 degrees in the vertical direction. In addition, the above-mentioned erector 17 and the supply and discharge mud pipes 18 and 19 are provided on a carriage (not shown) that travels on the rail 20 laid to the vicinity of the rear end of the outer shell 1 of the tunnel excavator. Mounted and collected on the start shaft side and removed.
さらに、掘削機本体3の第2隔壁7に設けている出入口(図示せず)を通じて作業員が土砂取込室10内に入り、カッタ板4の中心部と第2隔壁7から前方に突出している上記回転軸11の先端とを連結しているボルト等を取り外すと共にカッタ板4における外周カッタ板部4bと中央カッタ板部4aとの連結ボルトも取り外す一方、掘削機本体3の下周部における前後両側部に上記ガイド部材21、21と周方向に同一間隔を存して且つ該ガイド部材21、21の前方にそれぞれ位置するように引出し用ローラ26(図7に示す)を取付けると共に第1隔壁2の円環部2aと掘削機本体3の内殻体6とのボルトにより連結を解いたのち、軌条20上を走行する牽引車等からなる引抜き手段から引き出されたワイヤロープを掘削機本体3の後面に連繋してこの引抜き手段で掘削機本体3を牽引することにより掘削機本体3の内殻体6を外殻体1に固着している第1隔壁2の円環部2aから抜き取りながら該掘削機本体3を後退させて、図7に示すように、ガイド部材21上に乗せる。この際、掘削機本体3の下周部にガイド部材21と同一高さに装着されている引出し用ローラ26がガイド部材21上を回転しながら掘削機本体3が円滑に引き出される。   Further, an operator enters the earth and sand taking-in chamber 10 through an entrance (not shown) provided in the second partition wall 7 of the excavator body 3 and protrudes forward from the center portion of the cutter plate 4 and the second partition wall 7. The bolts connecting the tip of the rotary shaft 11 are removed and the connecting bolts between the outer cutter plate portion 4b and the central cutter plate portion 4a of the cutter plate 4 are also removed, while the lower end portion of the excavator main body 3 is removed. A pull-out roller 26 (shown in FIG. 7) is attached to both the front and rear sides so as to be positioned in front of the guide members 21 and 21 at the same interval in the circumferential direction with the guide members 21 and 21, respectively. After the connection between the ring portion 2a of the partition wall 2 and the inner shell 6 of the excavator body 3 is disconnected, the wire rope drawn from the pulling means such as a towing vehicle traveling on the rail 20 is used as the excavator body. 3 connected to the rear of the digging with this pulling means The excavator main body 3 is retracted while being pulled out from the annular portion 2a of the first partition wall 2 by fixing the inner shell body 6 of the excavator main body 3 to the outer shell body 1 by pulling the cutting machine main body 3. As shown in FIG. 7, it is placed on the guide member 21. At this time, the excavator body 3 is smoothly pulled out while the drawer roller 26 mounted on the lower peripheral portion of the excavator body 3 at the same height as the guide member 21 rotates on the guide member 21.
この掘削機本体3の後方への引出しによってカッタ板4は該掘削機本体3から分離するので、このカッタ板4の中央カッタ板部4aを上記引抜き手段等を利用して外周カッタ板部4bから後方に取り外し、第1隔壁2の円環部2a等にワイヤロープで吊支した状態にして外殻体1の前端部内に仮置きしておくと共に外周カッタ板部4bはその外周リング部4cを外殻体1の前方側の掘削地盤に接した状態にして残置させておく。   Since the cutter plate 4 is separated from the excavator main body 3 by pulling the excavator main body 3 backward, the central cutter plate portion 4a of the cutter plate 4 is removed from the outer cutter plate portion 4b by using the above-described extraction means. Removed rearward, suspended temporarily with a wire rope on the annular portion 2a of the first partition 2, etc. and temporarily placed in the front end of the outer shell 1, and the outer cutter plate portion 4b has its outer ring portion 4c The outer shell 1 is left in contact with the excavation ground on the front side.
ガイド部材21上に引き出された掘削機本体3は、次いで、外殻体1の前胴部1aの上周部内面に装着された複数のチエーンブロックよりなるリフト手段22によって僅かに吊り上げられ、この状態で上下方向(前後方向)に90度回転させられてその第2隔壁7を正面に向けた状態から伏臥状態に姿勢を変更させられる。なお、このリフト手段22は掘削機本体3を引き出す前に装着しておいてもよく、引出し後に装着してもよい。   The excavator body 3 drawn out on the guide member 21 is then lifted slightly by lift means 22 composed of a plurality of chain blocks mounted on the inner surface of the upper peripheral portion of the front body portion 1a of the outer shell 1. In this state, the posture can be changed from the state in which the second partition wall 7 is directed to the front to the prone state by being rotated 90 degrees in the vertical direction (front-rear direction). The lift means 22 may be mounted before the excavator body 3 is pulled out, or may be mounted after the pulling out.
このリフト手段22によって掘削機本体3を90度、上下方向に回転させるには、まず、図8〜図10に示すように外殻体1の前胴部1aの上周部内面における前部両側部に配設しているリフト手段22のワイヤロープ22a を掘削機本体3の前面における上端両側部に、中間部両側部に配設しているリフト手段22のワイヤロープ22b を掘削機本体3の後面における上端両側部にそれぞれ連繋してこれらのワイヤロープ22a 、22b を収縮させることにより掘削機本体3を起立状態、即ち、その第2隔壁7を正面に向けた状態を保持したまま僅かに吊り上げてガイド部材21上から離間させ、宙吊り状態にする。   In order to rotate the excavator body 3 vertically by 90 degrees by the lift means 22, first, as shown in FIG. 8 to FIG. 10, both sides of the front part on the inner surface of the upper peripheral part of the front body part 1a of the outer shell body 1 are used. The wire ropes 22a of the lift means 22 disposed on the upper part are disposed on both sides of the upper end of the front surface of the excavator body 3, and the wire ropes 22b of the lift means 22 disposed on both sides of the intermediate part are disposed on the excavator body 3. The excavator body 3 is lifted slightly while maintaining the state in which the excavator body 3 is standing up, that is, the second partition wall 7 is directed to the front side, by linking the wire ropes 22a and 22b respectively connected to both sides of the upper end of the rear surface. The guide member 21 is then separated from the guide member 21 and suspended.
次いで、外殻体1の前胴部1aの上周部内面における後部両側部に配設しているリフト手段22のワイヤロープ22c を掘削機本体3の後面における下端両側部に連繋したのち、図11に示すようにこのワイヤロープ22c を収縮する方向に引っ張る一方、上記掘削機本体3の前後面における上端両側部に連繋しているワイヤロープ22a 、22b を上記ワイヤロープ22c の引張量に応じてその伸長量を調節しながら掘削機本体3をゆっくりとその上端側が前方に、後端側が後方に移動するように操作して伏臥する方向に回転させていく。   Next, after connecting the wire ropes 22c of the lift means 22 disposed on both sides of the rear portion of the inner surface of the upper body portion of the front shell portion 1a of the outer shell body 1 to both sides of the lower end of the rear surface of the excavator body 3, FIG. As shown in FIG. 11, the wire rope 22c is pulled in the contracting direction, and the wire ropes 22a and 22b connected to both upper and lower end portions of the front and rear surfaces of the excavator body 3 are set according to the tensile amount of the wire rope 22c. While adjusting the amount of extension, the excavator body 3 is slowly rotated so that the upper end side moves forward and the rear end side moves rearward.
掘削機本体3がある程度、回転すると、図12〜図14に示すように、掘削機本体3の前面上端両側部に連繋していたワイヤロープ22a 、22a を上記中間部のワイヤロープ22b 、22b が連繋している掘削機本体3の後面上端両側部にその連繋部を移したのち、さらに、掘削機本体3を伏臥する方向に回転させていく。この際、掘削機本体3はその機長(回転軸11の長さ)を、該掘削機本体3の外径(第2隔壁7の径)と同等又はやや短い形状に形成されているので、外殻体1内の狭い空間部であっても周囲の機器類等に衝接することなく宙吊り状態で確実に上下方向(前後方向)に回転させることができる。   When the excavator body 3 is rotated to some extent, as shown in FIGS. 12 to 14, the wire ropes 22a and 22a connected to both sides of the upper end of the front surface of the excavator body 3 are replaced with the wire ropes 22b and 22b of the intermediate portion. After moving the connecting portions to the both sides of the rear upper end of the connected excavator body 3, the excavator body 3 is further rotated in a prone direction. At this time, the excavator body 3 is formed so that its length (the length of the rotary shaft 11) is equal to or slightly shorter than the outer diameter of the excavator body 3 (diameter of the second partition wall 7). Even in a narrow space in the shell 1, it can be reliably rotated in the vertical direction (front-rear direction) in a suspended state without colliding with surrounding devices.
そして、掘削機本体3が図15、図16に示すようにその第2隔壁7が水平状態に、回転軸11が垂直状態となるまで伏臥すると、図17に示すように外殻体1の前胴部1aの内底面上に設置している両側引き出し用レール24、24を、脚体部30における下側脚体部30a に対して上側脚体部30b を上方に回動させることにより起立させると共に、これらの両側引き出し用レール24、24と外殻体1の後方近傍部にまで敷設している上記軌条20のレール20a 、20a との間にこの軌条20を延長するように該軌条20と同一構造の回収用軌条20' を敷設し、上記引き出し用レール24、24をこの回収用軌条20' のレール20a を介して上記軌条20のレール20a 、20a に連続させる。なお、この回収用軌条20' の敷設は、掘削機本体3の上下方向への回転作業中に行ってもよい。   When the excavator body 3 is prone until the second partition wall 7 is in a horizontal state and the rotary shaft 11 is in a vertical state as shown in FIGS. 15 and 16, the front of the outer shell 1 is shown in FIG. The both-side drawer rails 24, 24 installed on the inner bottom surface of the trunk 1a are raised by rotating the upper leg 30b upward with respect to the lower leg 30a of the leg 30. At the same time, the rail 20 and the rails 20a, 20a of the rail 20 laid on both sides of the rails 24, 24 and the rear portion of the outer shell 1 are extended so that the rail 20 extends. A recovery rail 20 'having the same structure is laid, and the pull-out rails 24, 24 are connected to the rails 20a, 20a of the rail 20 via the rail 20a of the recovery rail 20'. The recovery rail 20 'may be laid during the rotating operation of the excavator body 3 in the vertical direction.
次いで、発進立坑側から軌条20上を走行させながら搬送台車23を回収用軌条20' 上から引き出し用レール24、24上に搬入したのち、上記図2に示すようにチエーンブロックからなるリフト手段22のワイヤロープを徐々に伸長させながら伏臥状態で掘削機本体3を降下させ、搬送台車23の載置台23' に面した第2隔壁7の中心部から下方に向かって垂直状に突出している回転軸11の軸部を載置台23' の水平内枠23b 内の開口部23d に挿通させると共に第2隔壁7の外周部を載置台23' の水平外枠23a の上面に受止させる。   Next, the transport carriage 23 is carried on the pull-out rails 24, 24 from above the recovery rail 20 'while running on the rail 20 from the start shaft side, and then lift means 22 comprising a chain block as shown in FIG. The excavator main body 3 is lowered in a prone state while gradually extending the wire rope, and the rotation projecting vertically downward from the center of the second partition wall 7 facing the mounting table 23 'of the transport carriage 23 The shaft portion of the shaft 11 is inserted into the opening 23d in the horizontal inner frame 23b of the mounting table 23 ', and the outer periphery of the second partition wall 7 is received on the upper surface of the horizontal outer frame 23a of the mounting table 23'.
このように、第2隔壁7から下方に突出している回転軸11を搬送台車23における載置台23' の水平内枠23b 内の開口部23d に挿通させるので、掘削機本体3を低い姿勢でもって搬送台車23上に搭載することができると共に、第2隔壁7の外周部を載置台23' の水平外枠23a 上に支持させるので、グラツキ等が生じることなく安定した姿勢となるように搬送台車23上に搭載することができ、掘削機本体3の搬出作業が能率よく行うことができる。   In this way, the rotary shaft 11 protruding downward from the second partition wall 7 is inserted into the opening 23d in the horizontal inner frame 23b of the mounting table 23 'in the transport carriage 23, so that the excavator body 3 can be kept in a low posture. Since the outer peripheral portion of the second partition wall 7 can be mounted on the horizontal outer frame 23a of the mounting table 23 ', it can be mounted on the transporting carriage 23, so that the transporting carriage can be in a stable posture without causing any flickering or the like. The excavator body 3 can be carried out efficiently.
掘削機本体3を搬送台車23上に積み込むと、リフト手段22のワイヤロープによる支持を解き、しかるのち、搬送台車23を図3に示す外殻体1内における引き出し用レール24上から回収用軌条20’上を通じて図4及び図18に示すように、軌条20上に移動させ、この軌条20上を発進立坑側に向かって管路S内を走行させて掘削機本体3を回収、撤去するものである。この際、搬送台車23における上記水平外枠23a の両側部に脚片28、28を下方に向かって突設し、この脚片28、28の下端間に、搬送台車23の走行用車輪27の外側方における枕木20b の両側端部上面に近接した状態で搬送台車23の進行方向うに長い転倒防止用部材29、29を固着しているので、搬送台車23が走行中に左右方向に傾動しようとしても、該転倒防止用部材29が枕木20b に当接して大きく傾動するのを確実に阻止し、安定した状態で掘削機本体3を回収することができる。   When the excavator main body 3 is loaded on the transport carriage 23, the lift means 22 is unsupported by the wire rope, and then the transport carriage 23 is recovered from the rail 24 for collection in the outer shell 1 shown in FIG. As shown in FIG. 4 and FIG. 18 through 20 ′, the excavator main body 3 is collected and removed by moving on the rail 20 and running on the rail 20 toward the start shaft side in the pipeline S. It is. At this time, leg pieces 28 and 28 are provided so as to protrude downward on both sides of the horizontal outer frame 23a of the transport carriage 23, and between the lower ends of the leg pieces 28 and 28, the traveling wheels 27 of the transport carriage 23 are provided. In the state where the sleeper 20b on the outer side is close to the upper surface of both ends, the members 29 and 29 for preventing the fall of the transport carriage 23 are fixed, so that the transport carriage 23 tries to tilt left and right while traveling. However, it is possible to reliably prevent the toppling prevention member 29 from coming into contact with the sleepers 20b and tilting greatly, and to recover the excavator body 3 in a stable state.
この掘削機本体3の回収後、上記搬送台車23を再びトンネル掘削機の外殻体1内に設置している引き出し用レール24上にまで搬入し、図19に示すように、カッタ板4の中央カッタ板部4aを該搬送台車23の載置台23' 上に搭載したのち、上記掘削機本体3と同様に該搬送台車23を軌条20上を走行させて発進立坑側に回収、撤去する。なお、カッタ板4の外周カッタ板部4bも掘削壁面に支持されている外周リング部4cから取り外して搬送台車23により回収、撤去する。   After the excavator main body 3 is collected, the transport carriage 23 is again carried up onto the drawer rail 24 installed in the outer shell 1 of the tunnel excavator, and as shown in FIG. After the central cutter plate portion 4a is mounted on the mounting table 23 ′ of the transfer carriage 23, the transfer carriage 23 is run on the rail 20 in the same manner as the excavator body 3 and is collected and removed on the start shaft side. Note that the outer cutter plate portion 4b of the cutter plate 4 is also removed from the outer ring portion 4c supported by the excavation wall surface and collected and removed by the transport carriage 23.
こうして、掘削機本体3やカッタ板4の中央カッタ板部4aと外周カッタ板部4bの回収後、推進ジャッキ15や中折れジャッキ16等も回収、撤去すると共に第1隔壁2やリングガータ14等を切除して撤去し、さらに、ガイド部材21や引き出し用レール24を撤去したのち、切羽近傍部の掘削壁面の覆工材として残置している外殻体1とカッタ板4の外周リング部4cとの内周面にコンクリートを打設することにより、トンネル覆工体からなる管路Sの内径と同じ内径のトンネル覆工体を形成する。この際、コンクリートの打設設備は、上記軌条20、20' を利用して外殻体1内にまで搬入され、打設後、この軌条20、20' を利用して搬出される。   Thus, after collecting the central cutter plate portion 4a and the outer cutter plate portion 4b of the excavator body 3 and the cutter plate 4, the propulsion jack 15, the bent jack 16 and the like are also collected and removed, and the first partition wall 2, the ring gutter 14, etc. After removing the guide member 21 and the pull-out rail 24, the outer ring body 4c and the outer ring portion 4c of the cutter plate 4 are left as the covering material for the excavation wall surface in the vicinity of the face. The tunnel lining body having the same inner diameter as the inner diameter of the pipe line S made of the tunnel lining body is formed by placing concrete on the inner peripheral surface. At this time, the concrete placement equipment is carried into the outer shell 1 using the rails 20 and 20 ', and after placement, the concrete placement equipment is carried out using the rails 20 and 20'.
なお、上記実施の形態においては、掘削機本体3と、カッタ板4を縮径した形状の中央カッタ板部4aとを別々に回収しているが、トンネル掘削機の外殻体1内の作業空間部に余裕があれば、掘削機本体3と中央カッタ板部4aとを分離させることなく一体に回収してもよい。   In the above embodiment, the excavator main body 3 and the central cutter plate portion 4a having a reduced diameter of the cutter plate 4 are separately collected, but the work in the outer shell 1 of the tunnel excavator is performed. If there is room in the space, the excavator body 3 and the central cutter plate 4a may be collected together without being separated.
さらに、上記実施の形態においては、掘削機本体3を回収するに際して、まず、ガイド部材21上に掘削機本体3を引き出したのち、リフト手段22により該掘削機本体3を持ち上げ、しかるのち、引き出し用レール24を脚体30により軌条20の高さにまで上げ、この引き出し用レール24に掘削機本体3を上載しているが、引き出し用レール24を用いることなく上記ガイド部材21にこの引き出し用レール24の機能を兼備させておいてもよい。   Further, in the above embodiment, when the excavator main body 3 is recovered, the excavator main body 3 is first pulled out on the guide member 21, and then the excavator main body 3 is lifted by the lift means 22, and then pulled out. The rail 24 is raised to the height of the rail 20 by the legs 30 and the excavator body 3 is mounted on the pull-out rail 24. The function of the rail 24 may be combined.
図20、図21はそのガイド部材21' を備えた回収装置の構造を示すもので、このガイド部材21' は前後方向に所定間隔を存して直列状に配設している数本のジャッキ21b'の上端面間に前後方向に長い一定幅と長さを有する水平支持台21a'を架設状態で固定してなり、このガイド部材21' を2台、外殻体1の前胴部1aの内底面上に周方向に上記軌条20の両側レール20a 、20a 間と同一幅間隔を存して着脱自在に設置するように構成している。さらに、水平支持台21a'上にはその後端が上記軌条20の前端に接続可能な引き出し用レール25が敷設されていると共に、ジャッキ21b'を収縮させた状態でガイド部材21’を前胴部1aの内底面上に設置した状態においては、このガイド部材21’の上記引き出し用レール25までの高さが掘削機本体3の引出し時の下周部における前後両側部に装着した引出し用ローラ26を上載可能な高さ、即ち、前胴部1aの内底面から引き出し用ローラ26までの高さと同じ高さになるように構成している。   FIG. 20 and FIG. 21 show the structure of the recovery device provided with the guide member 21 ′. This guide member 21 ′ is composed of several jacks arranged in series at a predetermined interval in the front-rear direction. A horizontal support 21a 'having a constant width and length that is long in the front-rear direction is fixed between the upper end surfaces of 21b' in an erected state, and two guide members 21 ', the front trunk 1a of the outer shell 1 are provided. It is configured to be detachably installed on the inner bottom surface of the rail 20 in the circumferential direction with the same width interval as between both rails 20a, 20a of the rail 20. Further, on the horizontal support 21a ′, a drawer rail 25 whose rear end can be connected to the front end of the rail 20 is laid, and the guide member 21 ′ is moved to the front barrel portion while the jack 21b ′ is contracted. In a state where the guide member 21 'is installed on the inner bottom surface of 1a, the height of the guide member 21' up to the drawer rail 25 is the drawer rollers 26 attached to both the front and rear sides of the lower peripheral part when the excavator body 3 is pulled out. Is configured to be the same height as the height from the inner bottom surface of the front body portion 1a to the drawing roller 26.
このように構成したガイド部材21’は2台、掘削機本体3の回収時において前胴部1aの内底面両側部上に設置され、ジャッキ21b'を収縮させてその高さを掘削機本体3の引き出し用ローラ26を受け入れ可能な高さに設定しておく。この状態にしたのち、上記同様に軌条20上を走行する牽引車等からなる引抜き手段から引き出されたワイヤロープにより掘削機本体3を牽引してその内殻体6を外殻体1に固着している第1隔壁2の円環部2aから抜き取りながら該掘削機本体3を後退させ、ガイド部材21' に乗せる。この際、掘削機本体3の下周部にガイド部材21と同一高さに装着されている引出し用ローラ26がガイド部材21' の水平支持台21a'上の引き出し用レール25上を回転しながら掘削機本体3が円滑に引き出される。掘削機本体3から分離したカッタ板4は上記同様にその中央カッタ板部4aを上記引抜き手段等を利用して外周カッタ板部4bから後方に取り外し、外殻体1の前端部内に仮置きしておくと共に外周カッタ板部4bはその外周リング部4cを外殻体1の前方側の掘削地盤に接した状態にして残置させておく。   Two guide members 21 ′ configured in this way are installed on both sides of the inner bottom surface of the front trunk 1 a when the excavator body 3 is collected, and the height of the excavator body 3 is reduced by contracting the jack 21 b ′. The drawer roller 26 is set to an acceptable height. After this state, the excavator body 3 is pulled by a wire rope drawn from a pulling means such as a towing vehicle traveling on the rail 20 in the same manner as described above, and the inner shell body 6 is fixed to the outer shell body 1. The excavator body 3 is moved backward while being extracted from the annular portion 2a of the first partition wall 2 and is placed on the guide member 21 '. At this time, the drawer roller 26 mounted on the lower peripheral portion of the excavator body 3 at the same height as the guide member 21 rotates on the drawer rail 25 on the horizontal support 21a 'of the guide member 21'. The excavator body 3 is pulled out smoothly. The cutter plate 4 separated from the excavator main body 3 is removed from the outer cutter plate portion 4b rearward using the above-mentioned pulling means or the like and temporarily placed in the front end portion of the outer shell body 1 in the same manner as described above. The outer peripheral cutter plate portion 4b is left in a state where the outer peripheral ring portion 4c is in contact with the excavation ground on the front side of the outer shell body 1.
ガイド部材21' 21' 間上に引き出された掘削機本体3は、次いで、外殻体1の前胴部1aの上周部内面に装着された複数のチエーンブロックよりなるリフト手段22によって僅かに吊り上げられ、この状態で上述したように上下方向(前後方向)に90度回転させられてその第2隔壁7を正面に向けた状態から伏臥状態に姿勢を変更させられる。   The excavator body 3 drawn out between the guide members 21 'and 21' is then slightly lifted by the lifting means 22 comprising a plurality of chain blocks mounted on the inner surface of the upper body 1a of the outer shell 1. In this state, it is lifted and rotated 90 degrees in the vertical direction (front-rear direction) as described above to change the posture from the state in which the second partition wall 7 is directed to the front to the prone state.
このように、掘削機本体3がその第2隔壁7を水平状態に、回転軸11が垂直状態となるまで伏臥すると、この伏臥状態を保持したまま、その第2隔壁7が軌条20の高さよりも僅かに高くなる位置までリフト手段22によって上昇させ、しかるのち、両側ガイド部材21' 、21' のジャッキ21b'を伸長させることにより水平支持台21a'を上昇させると共にこの水平支持台21a'上の引き出し用レール25と外殻体1の後方近傍部にまで敷設している上記軌条20のレール20a 、20a との間にこの軌条20を延長するように該軌条20と同一構造の回収用軌条20' を敷設して引き出し用レール25の後端をこの回収用軌条20' のレール20a を介して上記軌条20のレール20a に連続させる。   In this way, when the excavator main body 3 prone until the second bulkhead 7 is in a horizontal state and the rotary shaft 11 is in a vertical state, the second bulkhead 7 is kept from the height of the rail 20 while maintaining the prone state. Is lifted to a slightly higher position by the lift means 22, and then the horizontal support base 21a 'is lifted by extending the jacks 21b' of the guide members 21 'and 21' on both sides and on the horizontal support base 21a '. The recovery rail having the same structure as the rail 20 so that the rail 20 is extended between the rail 20a and 20a of the rail 20 laid to the rear vicinity of the outer shell 1 and the rail 25 of the outer shell 1. 20 'is laid and the rear end of the pull-out rail 25 is continued to the rail 20a of the rail 20 through the rail 20a of the recovery rail 20'.
次いで、発進立坑側から軌条20上を走行させながら搬送台車23を回収用軌条20' 上から引き出し用レール25、25上に搬入したのち、上記チエーンブロックからなるリフト手段22のワイヤロープを徐々に伸長させながら伏臥状態で掘削機本体3を降下させ、搬送台車23の載置台23' に面した第2隔壁7の中心部から下方に向かって垂直状に突出している回転軸11の軸部を載置台23' の水平内枠23b 内の開口部23d に挿通させると共に第2隔壁7の外周部を載置台23' の水平外枠23a の上面に受止させる。   Next, while carrying the carriage 23 from the start shaft side on the rail 20 and carrying it onto the pull-out rails 25 and 25 from the collection rail 20 ', the wire rope of the lift means 22 composed of the chain block is gradually While extending, the excavator body 3 is lowered in a prone state, and the shaft portion of the rotating shaft 11 protruding vertically downward from the center portion of the second partition wall 7 facing the mounting table 23 ′ of the transport carriage 23. The outer peripheral portion of the second partition wall 7 is received by the upper surface of the horizontal outer frame 23a of the mounting table 23 'while being inserted through the opening 23d in the horizontal inner frame 23b of the mounting table 23'.
掘削機本体3を搬送台車23上に積み込むと、リフト手段22のワイヤロープによる支持を解き、しかるのち、搬送台車23をガイド部材21' 上の引き出し用レール25上から回収用軌条20’上を通じて軌条20上に移動させ、この軌条20上を発進立坑側に向かって管路S内を走行させて掘削機本体3を回収、撤去するものである。   When the excavator body 3 is loaded on the transport carriage 23, the lift means 22 is unsupported by the wire rope, and then the transport carriage 23 passes from the pull-out rail 25 on the guide member 21 'through the recovery rail 20'. The excavator main body 3 is recovered and removed by moving it on the rail 20 and running on the rail 20 toward the start shaft side in the pipeline S.
なお、上記いずれの実施の形態においても、搬送台車23としては、水平外枠23a と水平内側23b とを上下に間隔を存して配設してなる比較的高さの高い載置台を有する台車を使用しているが、下向きとなった掘削機本体3の第2隔壁7の前後部をそれぞれ支持する台板の下面に軌条20上を走行する車輪を備えた高さの低い搬送台車等の搬送手段を採用してもよい。   In any of the above embodiments, as the transport carriage 23, a carriage having a relatively high mounting table in which a horizontal outer frame 23a and a horizontal inner side 23b are arranged at intervals in the vertical direction. Is used, but the transporting cart with a low height provided with wheels that run on the rails 20 on the lower surface of the base plate that respectively supports the front and rear portions of the second partition wall 7 of the excavator main body 3 that faces downward. You may employ | adopt a conveyance means.
また、カッタ板4として中央カッタ板部4aの外周部に円環形状の外周カッタ板部4bを取り外し可能に装着し、この外周カッタ板部4bを取り外すことにより第1隔壁2の円環部2aを通過可能な径に縮小させるように構成しているが、回転軸11の先端から径方向に第1隔壁2の円環部2aの半径よりも僅かに短い長さを有する複数本の中空スポークを放射状に突設し、これらの中空スポーク内に外周側スポーク片を、該中空スポーク内に配設した油圧ジャッキの作動によって中空スポークから延長方向に出没自在に配設し、これらの中空スポークと外周側スポーク片の前面に複数の掘削ビット前方に向かって突設してなるスポークタイプのカッタヘッドであってもよく、さらに、掘削土砂の搬出手段として、上記送泥管18、19に代えてスクリューコンベア等を採用しているトンネル掘削機であってもよい。   An annular outer cutter plate 4b is detachably mounted on the outer periphery of the central cutter plate 4a as the cutter plate 4, and the annular cutter 2a of the first partition 2 is removed by removing the outer cutter plate 4b. A plurality of hollow spokes having a length slightly shorter than the radius of the annular portion 2a of the first partition 2 in the radial direction from the tip of the rotating shaft 11 The outer side spoke pieces are disposed in the hollow spokes so as to be able to protrude and retract in the extending direction from the hollow spokes by the operation of the hydraulic jacks disposed in the hollow spokes. It may be a spoke-type cutter head that protrudes toward the front of a plurality of excavation bits on the front surface of the outer peripheral spoke piece, and further, instead of the mud pipes 18 and 19 as a means for carrying out excavation earth and sand. Screw conveyor A tunnel excavator adopting the above may be used.
さらに、掘削機本体3の回収時において、該掘削機本体3を伏臥させる方向に回動させてその第2隔壁7を下方に向けた状態で搬送台車23上に搭載しているが、仰臥させる方向に回動させてその第2隔壁7を上向きにした状態で搬送台車23上に搭載してもよい。さらに、このように掘削機本体3を90度回転させることなく、管路Sが比較的、広い空間部を有している場合には、外殻体1における第1隔壁2の円環部2aから引き出した起立状態の掘削機本体3を搬送台車23上に載置してもよい。   Further, when the excavator main body 3 is collected, the excavator main body 3 is mounted on the transport carriage 23 in a state where the excavator main body 3 is rotated in a prone direction and the second partition wall 7 is directed downward. It may be mounted on the transport carriage 23 in a state in which the second partition wall 7 is turned upward by turning in the direction. Further, when the pipe S has a relatively wide space without rotating the excavator main body 3 by 90 degrees in this way, the annular portion 2a of the first partition 2 in the outer shell 1 is obtained. The standing excavator body 3 pulled out from the vehicle may be placed on the transport carriage 23.
トンネル掘削機の縦断側面図。A longitudinal side view of a tunnel excavator. 掘削機本体を伏臥させて搬送台車上に搭載する回収装置全体の簡略側面図。The simplified side view of the whole collection | recovery apparatus mounted on a conveyance trolley with the excavator main body lying down. その簡略正面図。The simplified front view. 掘削機本体を搬出している状態の簡略側面図。The simplified side view of the state which is carrying out the excavator main body. 搬送台車の平面図。The top view of a conveyance trolley. 送排泥管やエレクタ等を撤去した状態のトンネル掘削機の縦断側面図。A vertical side view of a tunnel excavator with a mud pipe and an erector removed. 掘削機本体をガイド部材上に引き込んだ状態の縦断側面図。The longitudinal section side view of the state where the excavator main body was pulled in on the guide member. 掘削機本体を宙吊りにした状態の縦断側面図。The longitudinal side view of the state which suspended the excavator main body. その正面図。The front view. その背面図。The rear view. 掘削機本体を回転させている状態の縦断側面図。The vertical side view of the state which is rotating the excavator main body. 掘削機本体を略仰臥状態にまで回転させている状態の縦断側面図。The vertical side view of the state which is rotating the excavator main body to a substantially supine state. その正面図Front view その背面図。The rear view. 掘削機本体を仰臥状態にまで回転させた吊支状態の縦断側面図。The vertical side view of the suspended support state which rotated the excavator main body to the supine state. その正面図。The front view. 搬送台車を掘削機本体の下方にまで搬入する状態の縦断側面図。The vertical side view of the state which carries a conveyance trolley to the lower part of an excavator main body. 掘削機本体の搬出中の簡略正面図。The simplified front view in the middle of carrying out an excavator main body. 縮径状態のカッタ板部分を搬出する状態の縦断側面図。The longitudinal side view of the state which carries out the cutter board part of a diameter-reduced state. 本発明の別な実施の形態を示す正面図。The front view which shows another embodiment of this invention. その側面図。The side view.
符号の説明Explanation of symbols
1 外殻体
2 第1隔壁
3 掘削機本体
4 カッタ板
5 回転駆動手段
6 内殻体
7 第2隔壁
20 軌条
21 ガイド部材
22 リフト手段
23 搬送台車
24、25 引き出し用レール
DESCRIPTION OF SYMBOLS 1 Outer shell body 2 1st partition 3 Excavator main body 4 Cutter plate 5 Rotation drive means 6 Inner shell 7 Second partition
20 rail
21 Guide member
22 Lifting means
23 Transport cart
24, 25 Drawer rail

Claims (4)

  1. 前端部内周面にリング状の第1隔壁を設けてなる外殻体と、この外殻体の第1隔壁に引き抜き可能に摺接、支持された内殻体を備えていると共に該内殻体の前端部に第2隔壁を一体に設けてこの第2隔壁の背面にカッタ板の回転駆動手段を装着してなる掘削機本体と、この掘削機本体に回転自在に支持されたカッ板とを備えてなるトンネル掘削機により、地中にトンネルを掘削しながら所定長の管路を形成したのち、この管路内を通じて上記掘削機本体を回収する際の回収装置であって、管路に予め敷設されている枕木とレールとからなる軌条と、掘削機本体を第1隔壁から後方の外殻体内に引き抜く引抜き手段と、外殻体の内底面上に設置されて第1隔壁から引き抜かれる掘削機本体を後方の外殻体内にガイドするガイド部材と、このガイド部材上の掘削機本体を上記軌条より上方位置まで持ち上げるリフト手段と、外殻体の内底面上に設置されて上記軌条の前端にその後端を接続させる引出し用レールと、この引出し用レール上で上記リフト手段により持ち上げられている掘削機本体を受け取って上記軌条上を走行する搬送手段とからなることを特徴とするトンネル掘削機における掘削機本体の回収装置。   An outer shell body provided with a ring-shaped first partition wall on the inner peripheral surface of the front end portion, and an inner shell body slidably contacted and supported by the first partition wall of the outer shell body. An excavator main body in which a second partition wall is integrally provided at the front end of the main body, and a rotation driving means of a cutter plate is mounted on the back surface of the second partition wall, and a cutting plate rotatably supported by the excavator main body. A recovery device for recovering the main body of the excavator through the pipe after forming a predetermined length of the pipe while excavating the tunnel in the ground by the tunnel excavator provided. Rails composed of sleepers and rails laid, extraction means for extracting the excavator body from the first partition into the outer shell behind, and excavation installed on the inner bottom surface of the outer shell and extracted from the first partition A guide member for guiding the machine body into the rear shell body, and this guide Lift means for lifting the excavator body on the member to a position above the rail, a drawer rail installed on the inner bottom surface of the outer shell body and connecting the rear end to the front end of the rail, and on the rail An excavator main body recovery apparatus in a tunnel excavator, comprising: a transport means that receives the excavator main body lifted by the lift means and travels on the rail.
  2. 引出し用レールは、その高さを軌条の高さから引抜き時の掘削機本体の内殻体の外底面の高さにまで変更可能に構成していることを特徴とする請求項1に記載のトンネル掘削機における掘削機本体の回収装置。   The pull-out rail is configured so that the height thereof can be changed from the height of the rail to the height of the outer bottom surface of the inner shell of the excavator body when pulled out. Excavator body recovery equipment for tunnel excavators.
  3. 前端部内周面にリング状の第1隔壁を設けてなる外殻体と、この外殻体の第1隔壁に引き抜き可能に摺接、支持された内殻体を備えていると共に該内殻体の前端部に第2隔壁を一体に設けてこの第2隔壁の背面にカッタ板の回転駆動手段を装着してなる掘削機本体と、この掘削機本体に回転自在に支持されたカッ板とを備えてなるトンネル掘削機により、地中にトンネルを掘削しながら所定長の管路を形成したのち、この管路内を通じて上記掘削機本体を回収する際の回収装置であって、管路に予め敷設されている枕木とレールとからなる軌条と、掘削機本体を第1隔壁から後方の外殻体内に引き抜く引抜き手段と、外殻体の内底面上に設置されて第1隔壁から引き抜かれる掘削機本体を後方の外殻体内に案内し、且つ、上記軌条の高さにまで上昇可能に構成されているガイド部材と、このガイド部材上に引き出された掘削機本体を上記軌条より上方位置まで持ち上げるリフト手段と、軌条の高さまで上昇したガイド部材上で上記リフト手段により持ち上げられている掘削機本体を受け取って上記軌条上を走行する搬送手段とからなることを特徴とするトンネル掘削機における掘削機本体の回収装置。   An outer shell body provided with a ring-shaped first partition wall on the inner peripheral surface of the front end portion, and an inner shell body slidably contacted and supported by the first partition wall of the outer shell body. An excavator main body in which a second partition wall is integrally provided at the front end of the main body, and a rotation driving means of a cutter plate is mounted on the back surface of the second partition wall, and a cutting plate rotatably supported by the excavator main body. A recovery device for recovering the main body of the excavator through the pipe after forming a predetermined length of the pipe while excavating the tunnel in the ground by the tunnel excavator provided. Rails composed of sleepers and rails laid, extraction means for extracting the excavator body from the first partition into the outer shell behind, and excavation installed on the inner bottom surface of the outer shell and extracted from the first partition Guide the machine body into the rear shell and keep it at the height of the rail. A guide member configured to be able to ascend, lift means for lifting the excavator body drawn on the guide member to a position above the rail, and lifted by the lift means on the guide member raised to the height of the rail An excavator body recovery device for a tunnel excavator, comprising: a conveying means that receives the excavator body and travels on the rail.
  4. リフト手段は、掘削機本体を吊り上げた状態で前後方向に90度、回転させる機能を備えていることを特徴とする請求項1又は請求項3に記載のトンネル掘削機における掘削機本体の回収装置。   4. The excavator body recovery device for a tunnel excavator according to claim 1 or 3, wherein the lift means has a function of rotating the excavator body 90 degrees in the front-rear direction while the excavator body is lifted. .
JP2006187155A 2006-07-06 2006-07-06 Excavator body recovery device in tunnel excavator Active JP4557931B2 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002188391A (en) * 2000-10-10 2002-07-05 Mitsubishi Heavy Ind Ltd Tunnel excavator, and dismantling method to tunnel excavator
JP2003138875A (en) * 2002-11-13 2003-05-14 Taisei Corp Shield driving machine
JP2005248476A (en) * 2004-03-02 2005-09-15 Okumura Corp Tunnel excavator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002188391A (en) * 2000-10-10 2002-07-05 Mitsubishi Heavy Ind Ltd Tunnel excavator, and dismantling method to tunnel excavator
JP2003138875A (en) * 2002-11-13 2003-05-14 Taisei Corp Shield driving machine
JP2005248476A (en) * 2004-03-02 2005-09-15 Okumura Corp Tunnel excavator

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