JPS6123353B2 - - Google Patents

Info

Publication number
JPS6123353B2
JPS6123353B2 JP5915080A JP5915080A JPS6123353B2 JP S6123353 B2 JPS6123353 B2 JP S6123353B2 JP 5915080 A JP5915080 A JP 5915080A JP 5915080 A JP5915080 A JP 5915080A JP S6123353 B2 JPS6123353 B2 JP S6123353B2
Authority
JP
Japan
Prior art keywords
bending
jack
divided
shield
shell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP5915080A
Other languages
Japanese (ja)
Other versions
JPS56156392A (en
Inventor
Kozo Sakoi
Fumio Kuruma
Yasumi Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawasaki Heavy Industries Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to JP5915080A priority Critical patent/JPS56156392A/en
Publication of JPS56156392A publication Critical patent/JPS56156392A/en
Publication of JPS6123353B2 publication Critical patent/JPS6123353B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)

Description

【発明の詳細な説明】 本発明は折曲り式シールド掘進機、特に大きな
角度での曲進を可能にするシールド掘進機に関す
る。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a folding shield tunneling machine, and particularly to a shield tunneling machine that is capable of bending at a large angle.

鉄道、地下鉄、上下水道、電力通信ケーブル等
のトンネルをシールド工法によつて掘削する場
合、直進施工のみならず曲進施工がしばしば要求
される。従来、第1図イの平面図に示すようにシ
ールド掘進機aを曲進させるためシールド機の外
殻よりも広幅に掘削して、シールド機が曲進でき
るように空間bの余掘りを余儀なくされている。
しかし余掘りは地盤に緩みを生じさせやすく崩壊
の原因となることが多い。従つてこの余掘りを極
力小さくすることがシールド工法における重要な
課題である。
When excavating tunnels for railways, subways, water and sewage systems, power communication cables, etc. using the shield method, not only straight construction but also curved construction is often required. Conventionally, as shown in the plan view of Figure 1A, in order to make the shield machine a move in a curved direction, excavation was made wider than the outer shell of the shield machine, and space b had to be over-excavated to allow the shield machine to make a curved advance. has been done.
However, excessive digging tends to loosen the ground and often causes collapse. Therefore, an important issue in the shield method is to minimize this excess digging.

従来、第1図ロあるいはハに示すような分割胴
折曲り式のシールド掘進機があるが、これらは両
胴の間隔cにより折曲り角度が制限され、またジ
ヤツキdあるいはボルトeの取付位置の制約から
それらの許容振れ角度にも限界がある。加えて曲
進時片側の外殻に空隙fが生じ地山の崩壊の虞が
ある。また構造上折曲り角度はせいぜい2.5℃空
隙fは10cm程度であつて、曲率半径の小さな曲線
施工においては折曲り角度が不足なため、余掘り
量を大きくしなければらない欠点があつた。
Conventionally, there are split-barrel folding type shield tunneling machines as shown in Figure 1 B or C, but the bending angle of these is limited by the distance c between both shells, and the mounting position of the jack d or bolt e is limited. Due to constraints, there are limits to their allowable deflection angles. In addition, a void f is created in the outer shell on one side during the curve, and there is a risk of the ground collapsing. In addition, due to the structure, the bending angle is at most 2.5°C and the gap f is about 10cm, which is insufficient for curved construction with a small radius of curvature, so there is a drawback that the amount of excess excavation must be increased.

本発明は、曲進角度が大きく、かつ余掘り量を
減少させることにより地山の部分崩壊を回避する
シールド掘進機を提供することを目的とする。
SUMMARY OF THE INVENTION An object of the present invention is to provide a shield excavator that has a large advance angle and avoids partial collapse of the ground by reducing the amount of overexcavation.

以下、本発明を添付図に示す実施例により具体
的かつ詳細に説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in detail below with reference to embodiments shown in the accompanying drawings.

第2図は本発明により構成した2分割胴折曲り
式の手掘りシールド掘進機の1実施例の全体の側
面図を示し、第3図はその折曲り状態の片側横断
平面図を示す。このシールド掘進機の外殻は長手
方向に2分され、すなわち前位分割胴1と後位分
割胴2とに分けられ、両分割胴1,2は掘進機左
右方向中央において垂直に軸線を有する回転接続
ピン3により連結される。従つて外殻のみを平面
的にみると、直進施工時には、第4図イに示すよ
うに、回転接続ピン3の両側にV字形の空隙4,
4が存在し、最大角曲進施工時には、第4図ロに
示すように片側は閉じ、他は2倍の開きを有する
空隙4aが生ずる。
FIG. 2 shows an overall side view of an embodiment of a hand-mining shield excavator with a two-piece body folding type constructed according to the present invention, and FIG. 3 shows a cross-sectional plan view of one side of the shield in a folded state. The outer shell of this shield tunneling machine is divided into two in the longitudinal direction, that is, a front divided trunk 1 and a rear divided trunk 2, and both divided trunks 1 and 2 have an axis perpendicular to the center in the left-right direction of the tunneling machine. They are connected by a rotating connection pin 3. Therefore, when only the outer shell is viewed in plan, during straight construction, there are V-shaped gaps 4 on both sides of the rotary connecting pin 3, as shown in FIG.
4 exists, and at the time of maximum corner bending construction, a gap 4a is created which is closed on one side and twice as wide on the other side as shown in FIG. 4B.

前位分割胴1は前部1aと後部1bからなり、
段差を設けて後部1bがやや小径に形成される。
同様に後位分割胴2は前部2aと後部2bとから
なる。そしてこれらの小径部1b,2aに前記空
隙4,4aを覆うように可撓性カバー5を設け
る。
The front divided trunk 1 consists of a front part 1a and a rear part 1b,
The rear portion 1b is formed with a slightly smaller diameter by providing a step.
Similarly, the rear divided trunk 2 consists of a front part 2a and a rear part 2b. A flexible cover 5 is provided on these small diameter portions 1b, 2a so as to cover the gaps 4, 4a.

このカバー5は、例えば、第5図に示すような
バネ板等の弾性材料の短冊状の板5aを隣接配置
し、前位分割胴1の後部1bの外面に取付ける。
前記板5aは後位分割胴2の前部2aの外面には
固定されず、両分割胴1,2の折曲りにより角度
変化に追従して空隙4,4aを閉鎖するように常
に後位分割胴2aに接触する。
This cover 5 is attached to the outer surface of the rear part 1b of the front split trunk 1 by arranging strip-shaped plates 5a of an elastic material such as spring plates adjacent to each other as shown in FIG.
The plate 5a is not fixed to the outer surface of the front part 2a of the rear divided trunk 2, but is always attached to the rear divided trunk so as to follow the angle change by bending the two divided trunks 1 and 2 and close the gaps 4 and 4a. It contacts the trunk 2a.

カバー5は分割胴1,2の段差を利用し前位分
割胴1の前部1aすなわち外殻外面よりも外方に
張出させないように取付けられているので、掘進
機の掘進時の抵抗になることはない。
The cover 5 is installed using the difference in level between the split shells 1 and 2 so as not to protrude beyond the front part 1a of the front split shell 1, that is, the outer surface of the outer shell. It won't happen.

第6図はカバー5の変形実施例を示し、短冊形
のばね板単位板5aを喰い違いに重ね合せた配列
で空隙4,4aの密閉性を向上させたものであ
る。カバー5はまたゴム等の弾性の極めて大きな
材料で円筒形に構成することもできる。さらにこ
れらの構成を組合わせてもよい。いづれの形態で
もカバー5は曲進時の角度に応じて位分割胴前部
2aとの間に出ずる隙間を覆うようにあらかじめ
適当な形状を付与しておけばよい。
FIG. 6 shows a modified embodiment of the cover 5, in which rectangular spring plate unit plates 5a are arranged in a staggered manner to improve the sealing performance of the gaps 4, 4a. The cover 5 can also be made of a highly elastic material such as rubber and have a cylindrical shape. Furthermore, these configurations may be combined. In either form, the cover 5 may be given an appropriate shape in advance so as to cover the gap that appears between the cover 5 and the position-dividing trunk front portion 2a depending on the angle at the time of turning.

再び第3および第4図を参照して、シールド機
の掘進のための掘進ジヤツキ6を設け、そのロツ
ド側前端6aを前位分割胴1内にピン7で連結
し、またシリンダ側後端6bもピン7aにより押
圧環であるプレス・リング8に連結する。プレ
ス・リング8は後位分割胴2の外殻内面に嵌合さ
れ後位胴2の軸心方向に摺動可能である。エレク
タ装置9により後位胴2内で組立てられたセグメ
ントSの端部にプレス・リング8が当接し、掘進
ジヤツキ6の伸長により前位分割胴1が前進す
る。もちろん後位分割胴2は回転接続ピン3を介
し牽引されているので前位胴1に追随進行する。
Referring again to FIGS. 3 and 4, a digging jack 6 for digging the shield machine is provided, its rod-side front end 6a is connected to the front split shell 1 with a pin 7, and its cylinder-side rear end 6b It is also connected to a press ring 8, which is a press ring, by a pin 7a. The press ring 8 is fitted into the inner surface of the outer shell of the rear divided trunk 2 and is slidable in the axial direction of the rear trunk 2. The press ring 8 comes into contact with the end of the segment S assembled in the rear shell 2 by the erector device 9, and the front split shell 1 moves forward as the digging jack 6 expands. Of course, since the rear divided trunk 2 is towed via the rotational connection pin 3, it follows the front trunk 1 and advances.

セグメントSの組立に使用するエレクタ装置9
は後位分割胴2内に取付けられており、両分割胴
が折曲つてもエレクタ装置9の中心は常に後位分
割胴2の中心にあるので曲進施工時でもセグメン
トの組立配列を有利にする。
Erector device 9 used for assembling segment S
is installed in the rear divided cylinder 2, and even when both the divided cylinders are bent, the center of the erector device 9 is always at the center of the rear divided cylinder 2, making the assembly arrangement of the segments advantageous even during curved construction. do.

シールド機の前位分割胴1は第2図に示すよう
に適宜山留ジヤツキ10.11を装備し分割胴の
折曲りには無関係に前方の山留を可能にする。ま
たシールド機の曲進性を有利にするため、第3図
に示すように折曲りの外側を押すグリツパ装置1
2、外側案内となる着脱式ソリ13を設けると都
合がよい。
As shown in FIG. 2, the front split shell 1 of the shield machine is appropriately equipped with a retaining jack 10, 11 to enable forward buckling regardless of the bending of the split shell. In addition, in order to improve the bending performance of the shield machine, as shown in FIG.
2. It is convenient to provide a removable sled 13 as an outside guide.

曲進施工時胴の折曲りを容易かつ有利にするた
め、強制的折曲り力を与える目的で、シールド機
内の両側に対をなす折曲げ用ジヤツキ14を配設
してもよい。折曲げ用ジヤツキ14は、第2およ
び7図に示すように、そのロツド側前端14aを
前位分割胴1にピン15で連結しまたシリンダ側
後端14bもピン15aにより後位分割胴2に回
動可能に連結する。これらの折曲げ用ジヤツキ1
4は後述の油圧回路により連動作動させることに
より両胴折曲げ動作を行ない、また折曲げ用ジヤ
ツキ14の作動を停止させることにより所望の折
曲り角度を維持することができる。折曲り姿勢を
長時間維持するときには折曲げジヤツキ14に代
えて、第8図に示すような連結杆16をピン1
5,15aで回動可能に前後位分割胴1,2を連
結してもよい。
In order to make the bending of the shell easier and more advantageous during bending construction, a pair of bending jacks 14 may be provided on both sides of the shield machine for the purpose of applying a forced bending force. As shown in FIGS. 2 and 7, the bending jack 14 has its rod side front end 14a connected to the front divided cylinder 1 by a pin 15, and its cylinder side rear end 14b connected to the rear divided cylinder 2 by a pin 15a. Rotatably connected. These bending jacks 1
4 are operated in conjunction with each other by a hydraulic circuit, which will be described later, to perform the bending operation of both bodies, and by stopping the operation of the bending jack 14, a desired bending angle can be maintained. When maintaining the bent position for a long time, instead of the bending jack 14, use a connecting rod 16 as shown in FIG.
The front and rear divided trunks 1 and 2 may be rotatably connected at 5 and 15a.

第9,10および11図は前述実施例と異なる
実施例の推進ジヤツキ部分を示す。この実施例に
おいてはプレスリングに代え通常のシールド機に
おいて使用されるシユー17を各推進ジヤツキ6
毎に設けたものである。推進ジヤツキ6は前端6
aをピン7で連結し、推進ジヤツキ6のシリンダ
側後部はガイド部材18に支持され、ガイド部材
18の滑り運動の案内を兼ねた横長貫通孔19内
で胴の折曲りに伴ない変化する。なおガイド部材
18はばね0または流体圧手段により折曲り方向
の変位を弾性支持される。
Figures 9, 10 and 11 show the propulsion jack portion of an embodiment different from the previous embodiment. In this embodiment, a shoe 17 used in a normal shield machine is used instead of a press ring for each propulsion jack 6.
It is set up for each. The propulsion jack 6 is at the front end 6
a is connected by a pin 7, and the rear portion of the propelling jack 6 on the cylinder side is supported by a guide member 18, and changes as the body bends within a horizontally long through hole 19 that also serves as a guide for the sliding movement of the guide member 18. Note that the guide member 18 is elastically supported against displacement in the bending direction by a spring 0 or fluid pressure means.

第12および13図はさらに異なる実施例を示
す。推進ジヤツキ6はスリーブ21、ゴム等の弾
性部材22と共にガイド部18aと一体に構成さ
れ、若干の弾性変位が可能なようしたものであ
る。これらの変位はセグメントSの施工における
余裕シロとなる。
Figures 12 and 13 show further different embodiments. The propulsion jack 6 is constructed integrally with the guide portion 18a together with a sleeve 21 and an elastic member 22 such as rubber, so that it can be slightly elastically displaced. These displacements become the margin for construction of the segment S.

第14図は3胴分割式の実施例を示す。2個所
の回転接続ピン3a,3bからなり折曲り角を大
きくできるようにしたもので、この例では推進ジ
ヤツキ6を後位分割胴2と中位分割胴23とにわ
たり、折曲げ用ジヤツキ14を前位分割胴1と中
位分割胴23とにわたり配設している。
FIG. 14 shows a three-body split type embodiment. It is made up of two rotary connection pins 3a and 3b and is designed to increase the bending angle. In this example, the propulsion jack 6 extends between the rear divided cylinder 2 and the middle divided cylinder 23, and the bending jack 14 is connected to the front. It is arranged over the position dividing cylinder 1 and the middle position dividing cylinder 23.

なお前位胴と後位胴の接続位置を変えれば水平
の曲線掘進に限らず他の方向への曲線掘進を行な
うように構成することもできる。
By changing the connecting position of the leading trunk and the rear trunk, it is possible to perform not only horizontal curved excavation but also curved excavation in other directions.

次に上記構成に基いて折曲げジヤツキの駆動回
路とともにその作動を説明する。
Next, a description will be given of the bending jack drive circuit and its operation based on the above configuration.

第15図は、折曲げ用ジヤツキ14に対する油
圧回路の1例を示す。作動油は、油圧源24から
の3位置切換弁25を経由しシールド機進行方向
の左側の折曲げ用ジヤツキ14lに送られ、他方
3位置切換弁25および3位置切換弁26を経由
し右側の折曲げ用ジヤツキ14rに送られる。2
7はチエツク弁、28はリリーフ弁、29はオイ
ルリサーバ、30は戻り油管を示す。
FIG. 15 shows an example of a hydraulic circuit for the bending jack 14. The hydraulic oil is sent from the hydraulic source 24 via the 3-position switching valve 25 to the bending jack 14l on the left side in the direction of movement of the shield machine, and on the other hand via the 3-position switching valve 25 and 3-position switching valve 26 to the right bending jack 14l. It is sent to the bending jack 14r. 2
7 is a check valve, 28 is a relief valve, 29 is an oil reservoir, and 30 is a return oil pipe.

3位置切換弁26が正のとき、3位置切換弁2
5を正にすると、第15図中実線矢印で示すよう
に左ジヤツキ14lは伸長し右ジヤツキ14rは
縮小し、反対に3位置切換弁25を逆に切換える
と、点線矢印で示すように左ジヤツキ14lは縮
小し右ジヤツキ14rは伸長し、それぞれの方向
の折曲り力を発生する。作動の途中で3位置切換
弁25,26を中正にすると折曲り状態が維持さ
れる。この油圧回路において、折曲げ終了後に、
3位置切換弁26が逆の状態のとき3位置切換弁
25を逆に切換えると、第16図に示すように、
左右ジヤツキ14l,14rとも縮小し、その結
果、後位分割胴2を前位分割胴1の方向に牽引す
る力が発生するので、回転接続ピン3による牽引
の負担を軽減することができる。
When the 3-position switching valve 26 is positive, the 3-position switching valve 2
5 is set positive, the left jack 14l extends and the right jack 14r contracts, as shown by the solid line arrow in FIG. The right jack 14l contracts and the right jack 14r extends, generating bending forces in the respective directions. If the three-position switching valves 25 and 26 are set to the neutral position during operation, the bent state is maintained. In this hydraulic circuit, after the bending is completed,
When the 3-position switching valve 25 is switched in the opposite state when the 3-position switching valve 26 is in the reverse state, as shown in FIG.
Both the left and right jacks 14l and 14r are reduced, and as a result, a force is generated to pull the rear divided trunk 2 in the direction of the front divided trunk 1, so that the burden of traction by the rotary connection pin 3 can be reduced.

以上のように本発明によると次の諸効果が得ら
れる。
As described above, according to the present invention, the following effects can be obtained.

(1) 従来の折曲り式シールド掘進機の折曲り角度
が精々2.5の程度であるのに対して、本発明の
シールド掘進機の折曲り角度は10゜程度に大き
くすることができる。
(1) While the bending angle of a conventional folding type shield tunneling machine is about 2.5 degrees at most, the bending angle of the shield tunneling machine of the present invention can be increased to about 10 degrees.

(2) 胴の折曲りにより所定の曲線に合せることが
できるので余掘りが極めて小さくて済む。従つ
て地盤の崩壊を防止できるとともに地盤とセグ
メントとの隙間、いわゆるテールポイドにおけ
る地盤崩壊、沈下を防止できる。
(2) Since the body can be bent to fit a predetermined curve, extra digging can be minimized. Therefore, it is possible to prevent the ground from collapsing, and also to prevent the ground from collapsing and subsidence in the gap between the ground and the segment, that is, the so-called tail poid.

(3) テールポイドに充填する裏込材の所要量を少
なくすることができる。
(3) The required amount of backfilling material to be filled into the tailpoid can be reduced.

(4) 曲線施工の精度が向上し、特に機械掘り式の
場合にも余掘りを全周にわたつて行う必要がな
くなるからシールド機の沈下を防止することが
できる。
(4) The accuracy of curve construction is improved, and it is possible to prevent the shield machine from sinking, especially in the case of mechanical excavation, since it is no longer necessary to perform over-digging all around the circumference.

(5) 一般にシールド工事では折曲り方向は左右に
限定され上下方向急カープの施工は少ない。従
つて折曲りを左右のみ可能な構成にして置くと
上下方の掘曲りがほとんど出せず上下方向の蛇
行を防止することができる。
(5) In general, in shield construction, the bending direction is limited to left and right, and construction of sharp curves in the vertical direction is rare. Therefore, if the structure is such that bending is possible only in the left and right directions, it is possible to prevent vertical meandering since almost no vertical bending occurs.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図イは、従来のシールド掘進機の曲線施工
状態を示す横断平面図、第1図ロ,ハは従来の折
曲り式掘進機の2例を示す横断平面略図である。
第2図は本発明の1実施例の全体の縦断側面図、
第3図はその折曲り状態の横断片側平面図、第4
図イおよびロは本発明の1実施例のシールド掘進
機の直進時および折曲り時の状態を示す平面略
図、第5図は可撓性カバーの1例の斜視図、第6
図はカバーの他例の斜視図、第7図は折曲げ用ジ
ヤツキの部分の縦断側面図、第8図は連結杆を用
いた縦断側面図、第9,10および11図は推進
ジヤツキ部分の他の実施例の2状態の横断側面図
および部分正面図、第12および13図は推進ジ
ヤツキ部分のさらに他の実施例の縦断側面図およ
び部分正面図、第14図は3分割折曲り式の本発
明実施例の横断平面略図、第15図は折曲げ用ジ
ヤツキの油圧回路、第16図はその牽引状態に切
換えた状態を示す。 1……前位分割胴、2……後位分割胴、3,3
a,3b……回転接続ピン、4,4a……空隙、
5……カバー、6……推進ジヤツキ、7,7a…
…ピン、8……プレスリング、9……エレクタ装
置、14……折曲げ用ジヤツキ、15,15a…
…ピン、16……連結杆、23……中位分割胴、
S……セグメント、a……シールド掘進機、b…
…余裕空隙、c……間隙、d……ジヤツキ、e…
…ボルト、f……空隙。
FIG. 1A is a cross-sectional plan view showing a conventional shield tunneling machine in a curved construction state, and FIGS.
FIG. 2 is an overall vertical sectional side view of one embodiment of the present invention;
Figure 3 is a cross-sectional side plan view of the folded state, Figure 4
Figures A and B are schematic plan views showing the state of a shield tunneling machine according to an embodiment of the present invention when it is moving straight and when it is bent; Figure 5 is a perspective view of an example of a flexible cover;
The figure is a perspective view of another example of the cover, Figure 7 is a vertical side view of the bending jack part, Figure 8 is a vertical side view of the connecting rod, and Figures 9, 10 and 11 are of the propulsion jack part. 12 and 13 are longitudinal sectional side views and partial front views of still another embodiment of the propulsion jack portion, and FIG. 14 is a three-part folding type. A schematic cross-sectional view of an embodiment of the present invention, FIG. 15 shows the hydraulic circuit of the bending jack, and FIG. 16 shows the state in which it is switched to the traction state. 1... Front split trunk, 2... Rear split trunk, 3, 3
a, 3b...Rotary connection pin, 4, 4a...Gap,
5...Cover, 6...Propulsion jack, 7,7a...
...Pin, 8...Press ring, 9...Erector device, 14...Bending jack, 15, 15a...
...Pin, 16...Connecting rod, 23...Medium split barrel,
S...Segment, a...Shield excavator, b...
...Extra gap, c...Gap, d...Jack, e...
...Bolt, f... air gap.

Claims (1)

【特許請求の範囲】 1 シールド掘進機胴の外殻を長手方向に分割
し、その各分割胴を同軸線1対の回転接続ピンで
折曲可能に連結し、推進ジヤツキは前部を前位胴
に回転可能に枢支し、後部を後位胴に分割胴の折
曲りに応じて変位可能に弾性支持するとともに、
連結部外殻の周囲に折曲り部に生ずる空隙を覆う
可撓性カバーを設け、さらに分割胴の折曲げ補助
および折曲り状態維持用の折曲げ用ジヤツキを前
位胴と後位胴とにわたつて両側に設け、前記折曲
げ用ジヤツキの折曲げ油圧回路に後位胴を牽引す
る油圧回路を設けたことを特徴とするシールド掘
進機。 2 前記接続ピンが胴の左右方向中央において、
その軸線が垂直であることを特徴とする特許請求
の範囲第1項に記載のシールド掘進機。 3 前記各分割胴の連結部の外殻に段差を設け、
前記可撓性カバーをこの段差内に張設したことを
特徴とする特許請求の範囲第1項および第2項の
何れかに記載のシールド掘進機。 4 後位分割胴内のプレス・リングと前位分割胴
に前進用の推進ジヤツキを回動可能に枢支したこ
とを特徴とする特許請求の範囲第1項ないし第3
項の何れかに記載のシールド掘進機。
[Scope of Claims] 1. The outer shell of the shield tunneling machine body is divided in the longitudinal direction, and each divided body is bendably connected by a pair of coaxial rotary connecting pins, and the propulsion jack moves the front part forward. It is rotatably supported on the torso, and the rear part is elastically supported by the rear torso so that it can be displaced according to the bending of the divided torso.
A flexible cover is provided around the joint outer shell to cover the gap created at the bending part, and bending jacks are provided on the front and rear shells to assist in bending the split shell and maintain the bent state. A shield excavator characterized in that a hydraulic circuit for towing the rear trunk is provided in the bending hydraulic circuit of the bending jack, which is provided on both sides of the bending jack. 2. The connecting pin is located at the center of the body in the left-right direction,
The shield tunneling machine according to claim 1, characterized in that its axis is vertical. 3. Providing a step on the outer shell of the connecting part of each of the divided cylinders,
The shield excavator according to any one of claims 1 and 2, wherein the flexible cover is stretched within the step. 4. Claims 1 to 3, characterized in that a forward propulsion jack is rotatably supported on the press ring in the rear split shell and the front split shell.
The shield tunneling machine described in any of the paragraphs.
JP5915080A 1980-05-02 1980-05-02 Shielded excavator Granted JPS56156392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5915080A JPS56156392A (en) 1980-05-02 1980-05-02 Shielded excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5915080A JPS56156392A (en) 1980-05-02 1980-05-02 Shielded excavator

Publications (2)

Publication Number Publication Date
JPS56156392A JPS56156392A (en) 1981-12-03
JPS6123353B2 true JPS6123353B2 (en) 1986-06-05

Family

ID=13105020

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5915080A Granted JPS56156392A (en) 1980-05-02 1980-05-02 Shielded excavator

Country Status (1)

Country Link
JP (1) JPS56156392A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5885698U (en) * 1981-12-08 1983-06-10 石川島播磨重工業株式会社 shield tunneling machine
JPS5969292U (en) * 1982-11-02 1984-05-10 日立造船株式会社 shield tunneling machine
JPH0327116Y2 (en) * 1984-09-28 1991-06-12
JPH0336638Y2 (en) * 1985-07-19 1991-08-02

Also Published As

Publication number Publication date
JPS56156392A (en) 1981-12-03

Similar Documents

Publication Publication Date Title
JP3145901B2 (en) Variable section shield excavator
CN111188623A (en) Shield machine
JPS6123353B2 (en)
JPH053590Y2 (en)
JP3136456B2 (en) Direction control device for tunnel excavator
JPH0343435B2 (en)
JP3752660B2 (en) Shield excavator
JP3069506B2 (en) Folding shield excavator
JP4161878B2 (en) Shield excavator propulsion device
JPH10140972A (en) Shielding excavation machine bendable in middle
JPS62133290A (en) Shield excavator
JPS5918513B2 (en) Shield for tunnel excavation
JPS61290196A (en) Method of shielding propulsion construction
JP3399689B2 (en) Folding shield excavator
JPH0245355Y2 (en)
JP2609111B2 (en) Shield machine for sharp curve construction
JPH0417669Y2 (en)
JP2554957B2 (en) Sharp curve shield machine
JP3522846B2 (en) Shield excavator for sharp curve construction
JPH02161093A (en) Shield excavator
JPH0115755Y2 (en)
JPH0455593A (en) Shield excavator
JPS60391Y2 (en) Propulsion device for shield tunneling machine
JPH0626623Y2 (en) Refractive shield machine
JPH0449398A (en) Shield machine