JPH0363393A - Shield machine - Google Patents

Shield machine

Info

Publication number
JPH0363393A
JPH0363393A JP19769989A JP19769989A JPH0363393A JP H0363393 A JPH0363393 A JP H0363393A JP 19769989 A JP19769989 A JP 19769989A JP 19769989 A JP19769989 A JP 19769989A JP H0363393 A JPH0363393 A JP H0363393A
Authority
JP
Japan
Prior art keywords
cutter head
shield body
shield
elliptic
tunnel
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.)
Pending
Application number
JP19769989A
Other languages
Japanese (ja)
Inventor
Shoji Nishida
昭二 西田
Kenji Imai
今井　憲治
Tomohiro Abe
知宏 阿部
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.)
Kanadevia Corp
Original Assignee
Hitachi Zosen Corp
Hitachi Shipbuilding and Engineering Co 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 Hitachi Zosen Corp, Hitachi Shipbuilding and Engineering Co Ltd filed Critical Hitachi Zosen Corp
Priority to JP19769989A priority Critical patent/JPH0363393A/en
Publication of JPH0363393A publication Critical patent/JPH0363393A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

PURPOSE:To excavate a tunnel with an elliptic section, by providing a rotary shaft of a circular cutter head to be slant against the center axis of a shield body and by forming the section of the shield body to be elliptic. CONSTITUTION:A circular cutter head 2 is supported to be freely rotational at the front edge of a shield body 1 with an elliptic section. Next, the rotary shaft (a) of the cutter head 2 is vertically inclined at a specified angle theta against the center axis (b) of the shield body 1. Next, a rotary driving device 4 is installed to drive the cutter head 2 and the soil excavated by the cutter head 2 is discharged by means of a soil disposal device. In this way, an elliptic tunnel with a longitudinally long shape can be excavated.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、断面が楕円形状のトンネルを掘削し得るシー
ルド掘進機に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a shield excavator capable of excavating a tunnel having an elliptical cross section.

従来の技術 従来のシールド掘進機は、断面形状が円形または繭形（
８の字形状）のトンネルを掘削するものであった。した
がって、このシールド掘進機により、トンネルを楕円形
状に掘削しようとすると、カッタヘッドの外周に出退自
在に設けられた余堀用のカッタビットを、すなわち余堀
装置を使用して掘削する程度であった。Conventional technology Conventional shield tunneling machines have a circular or cocoon-shaped cross-section (
The purpose was to excavate a tunnel in the shape of a figure 8. Therefore, when attempting to excavate a tunnel in an elliptical shape using this shield excavation machine, the cutter bit for over-drilling provided on the outer periphery of the cutter head so as to be able to move in and out, that is, the over-drilling device, is used to excavate the tunnel. there were.

発明が解決しようとする課題 上記従来のシールド掘進機によると、断面形状が楕円状
のトンネルを掘削する場合、余堀装置を使用して掘削し
なければならず、非常に困難な作業になるという問題が
あった。Problems to be Solved by the Invention According to the above-mentioned conventional shield excavator, when excavating a tunnel with an elliptical cross-section, an over-drilling device must be used to excavate, which is a very difficult task. There was a problem.

そこで、本発明は上記課題を解消し得るシールド掘進機
を提供することを目的とする。Therefore, an object of the present invention is to provide a shield excavator that can solve the above problems.

課題を解決するための手段 上記課題を解決するため、本発明のシールド掘進機は、
円形のカッタヘッドがシールド本体の前端部に回転自在
に設けられたシールド掘進機において、上記カッタヘッ
ドの回転軸をシールド本体の中心軸に対して傾斜させて
設けるとともに、シールド本体の断面形状を楕円状に形
成したものである。Means for Solving the Problems In order to solve the above problems, the shield excavator of the present invention has the following features:
In a shield excavator in which a circular cutter head is rotatably provided at the front end of a shield body, the rotation axis of the cutter head is inclined with respect to the central axis of the shield body, and the cross-sectional shape of the shield body is elliptical. It is formed into a shape.

作用 上記構成によると、シールド本体の前端部に回転自在に
設けられるカッタヘッドをシールド本体に対して傾斜し
て設けたので、余堀装置を使用しなくても、断面形状が
楕円状のトンネルを容易に掘削することができる。According to the above structure, the cutter head, which is rotatably provided at the front end of the shield body, is inclined with respect to the shield body, so it is possible to cut a tunnel with an elliptical cross-sectional shape without using an over-drilling device. Can be easily excavated.

実施例 以下、本発明の一実施例を第１図および第２図に基づき
説明する。EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2.

１は断面形状が楕円状に形成されたシールド本体で、そ
の前端部には円形のカッタヘッド２が旋回軸受３を介し
て回転自在に支持されている。そして、このカッタヘッ
ド２の回転軸ａは、シールド本体ｌの中心軸すに対して
所定角度（θ）でもって上下方向で傾斜されている。す
なわち、シールド本体１の掘進方向前方からみれば、カ
ッタヘッド２は水平方向が長袖となるような楕円形状に
なっており、したがってこの状態でシールド本体１を前
進させれば、第２図のセグメントＡの配置図に示すよう
に、掘削されるトンネルの断面形状は楕円状となる。勿
論、カッタヘッド２を傾斜させることによって生じる楕
円と、シールド本体１の断面形状とは一致されている。Reference numeral 1 denotes a shield body having an elliptical cross-sectional shape, and a circular cutter head 2 is rotatably supported at the front end of the shield body via a swing bearing 3. The rotation axis a of the cutter head 2 is vertically inclined at a predetermined angle (θ) with respect to the central axis of the shield body l. That is, when viewed from the front of the shield body 1 in the excavation direction, the cutter head 2 has an elliptical shape with a long sleeve in the horizontal direction. Therefore, if the shield body 1 is advanced in this state, the segment shown in FIG. As shown in layout diagram A, the cross-sectional shape of the tunnel to be excavated will be elliptical. Of course, the ellipse created by tilting the cutter head 2 and the cross-sectional shape of the shield body 1 match.

なお、第１図中、４はカッタヘッド２駆動用の回転駆動
装置、５はカッタヘッド２により掘削された掘削土砂を
排出するための排土装置である。In FIG. 1, 4 is a rotary drive device for driving the cutter head 2, and 5 is an earth removal device for discharging the excavated earth and sand excavated by the cutter head 2.

ところで、上記実施例においては、土圧式シールド掘進
機について説明したが、例えば第３図および第４図に示
すように、勿論泥水加圧式シールド掘進機６にも適用で
きる。Incidentally, in the above embodiment, an earth pressure type shield excavator has been described, but of course it can also be applied to a mud water pressure type shield excavator 6, as shown in FIGS. 3 and 4, for example.

さらに、上記各実施例においては、カッタヘッド２の回
転軸ａを上下方向で傾斜させたが、例えばシールド本体
１の中心軸すに対して水平方向に傾斜させれば、縦長の
楕円形状のトンネルを掘削することができる。Furthermore, in each of the above embodiments, the rotation axis a of the cutter head 2 is inclined in the vertical direction, but if it is inclined in the horizontal direction with respect to the central axis of the shield body 1, for example, a vertically elongated elliptical tunnel can be formed. can be drilled.

発明の効果 以上のように本発明の構成によると、シールド本体の前
端部に回転自在に設けられるカッタヘッドをシールド本
体に対して傾斜して設けたので、余堀装置を使用しなく
ても、断面形状が楕円状のトンネルを容易に掘削するこ
とができる。Effects of the Invention As described above, according to the structure of the present invention, the cutter head rotatably provided at the front end of the shield body is provided at an angle with respect to the shield body, so that the cutter head can be cut without using an over-drilling device. Tunnels with elliptical cross-sectional shapes can be easily excavated.

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

第１図および第２図は本発明の一実施例を示すもので、
第１図は全体断面図、第２図は第１図のＩ−Ｉ半断面図
、第３図および第４図は他の実施例を示すもので、第３
図は全体断面図、第４図は第３図の■−■半断面図であ
る。 １・・・・シールド本体、２・・・・カッタヘッド、３
・・・・旋回軸受、４・・・・回転駆動装置、５・・・
・排土装置。1 and 2 show an embodiment of the present invention,
FIG. 1 is an overall sectional view, FIG. 2 is a half sectional view taken along line II in FIG. 1, and FIGS. 3 and 4 show other embodiments.
The figure is an overall sectional view, and FIG. 4 is a half sectional view taken along the line -■ in FIG. 3. 1...Shield body, 2...Cutter head, 3
... Swivel bearing, 4... Rotation drive device, 5...
・Earth removal equipment.

Claims (1)

【特許請求の範囲】[Claims] １、円形のカッタヘッドがシールド本体の前端部に回転
自在に設けられたシールド掘進機において、上記カッタ
ヘッドの回転軸をシールド本体の中心軸に対して傾斜さ
せて設けるとともに、シールド本体の断面形状を楕円状
に形成したことを特徴とするシールド掘進機。1. In a shield excavator in which a circular cutter head is rotatably provided at the front end of a shield body, the rotation axis of the cutter head is provided at an angle with respect to the central axis of the shield body, and the cross-sectional shape of the shield body is A shield excavator characterized by having an oval shape.
JP19769989A 1989-07-28 1989-07-28 Shield machine Pending JPH0363393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19769989A JPH0363393A (en) 1989-07-28 1989-07-28 Shield machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19769989A JPH0363393A (en) 1989-07-28 1989-07-28 Shield machine

Publications (1)

Publication Number Publication Date
JPH0363393A true JPH0363393A (en) 1991-03-19

Family

ID=16378891

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19769989A Pending JPH0363393A (en) 1989-07-28 1989-07-28 Shield machine

Country Status (1)

Country Link
JP (1) JPH0363393A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3009057U (en) * 1994-09-16 1995-03-28 株式会社シグマ 4-legged vehicle
WO1996015353A1 (en) * 1994-11-15 1996-05-23 Hazama Corporation Tunnel drilling machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3009057U (en) * 1994-09-16 1995-03-28 株式会社シグマ 4-legged vehicle
WO1996015353A1 (en) * 1994-11-15 1996-05-23 Hazama Corporation Tunnel drilling machine
US5915790A (en) * 1994-11-15 1999-06-29 Hazama Corporation Tunnel boring machine

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