JP4375675B2 - Shield machine - Google Patents

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JP4375675B2
JP4375675B2 JP2005225306A JP2005225306A JP4375675B2 JP 4375675 B2 JP4375675 B2 JP 4375675B2 JP 2005225306 A JP2005225306 A JP 2005225306A JP 2005225306 A JP2005225306 A JP 2005225306A JP 4375675 B2 JP4375675 B2 JP 4375675B2
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cutter
rotary
axis
rotation
shield machine
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亨 新原
勲 牧内
邦博 永森
勝美 猪又
秀和 穴井
保徳 近藤
博吉 岩田
保之 坂井
誠 小田
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Kajima Corp
Kawasaki Motors Ltd
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Kawasaki Jukogyo KK
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Description

本発明は種々の断面形状のトンネルを掘削可能なシールド掘進機に関するものである。   The present invention relates to a shield machine capable of excavating tunnels having various cross-sectional shapes.

従来、シールド掘進機は、胴体を含む掘進機本体と、掘進機本体を推進させる複数のシールドジャッキと、掘進機本体の前端側の地山を掘削する掘削装置とを備えている。一般に、掘進機本体の胴体は円筒状に形成され、掘削装置においては、胴体と同径のカッターヘッドの前面に複数のカッタービットが装備され、このカッターヘッドが、掘進機本体の前端側部分に掘進機本体の中心軸の回りに回転可能に支持されると共に、複数の油圧モータにより回転駆動されて、円形断面のトンネルを掘削する。   2. Description of the Related Art Conventionally, a shield machine includes an excavator body including a body, a plurality of shield jacks for propelling the excavator body, and an excavator that excavates a natural ground on the front end side of the excavator body. Generally, the body of the excavator main body is formed in a cylindrical shape, and the excavator is equipped with a plurality of cutter bits on the front surface of the cutter head having the same diameter as the body, and this cutter head is attached to the front end side portion of the excavator main body. It is supported rotatably around the central axis of the excavator body and is driven to rotate by a plurality of hydraulic motors to excavate a tunnel having a circular cross section.

ところで、近年、円形断面以外に矩形断面や長円形断面等の種々の断面形状のトンネルを掘削可能なシールド掘進機が開発され、今までに、この種のシールド掘進機が実用化されている（例えば、特許文献１〜３参照）。   By the way, in recent years, a shield machine capable of excavating tunnels having various cross-sectional shapes such as a rectangular cross section and an oval cross section in addition to a circular cross section has been developed, and so far this type of shield machine has been put into practical use ( For example, see Patent Documents 1 to 3).

特許文献１のシールド掘進機では、ディスクカッターが掘進機本体に掘進機本体の中心軸の回りに回転可能に支持され、このディスクカッターのディスク本体に遊星カッターが回転可能に支持されている。複数の油圧モータによりディスク本体が回転駆動されると、遊星カッターは、ディスク本体と一体的に公転すると共に、遊星歯車機構によりディスク本体の回転に同期連動して自転する。所定の断面形状のトンネルを掘削可能に、遊星カッターの輪郭形状が遊星カッターの自転数と公転数との比に応じて設定される。   In the shield machine of Patent Document 1, the disk cutter is supported by the machine body so as to be rotatable about the central axis of the machine, and the planetary cutter is supported by the disk body of the disk cutter so as to be rotatable. When the disk main body is rotationally driven by the plurality of hydraulic motors, the planetary cutter revolves integrally with the disk main body and rotates in synchronization with the rotation of the disk main body by the planetary gear mechanism. The contour shape of the planetary cutter is set in accordance with the ratio between the number of rotations of the planetary cutter and the number of revolutions so that a tunnel having a predetermined cross-sectional shape can be excavated.

特許文献２のシールド掘進機では、放射状に延びる４本のスポークに４本の伸縮腕が夫々油圧ジャッキにより径方向へ伸縮可能に連結され、各伸縮腕にコーナーカッターとコーナーカッターを回転駆動する油圧モータが取付けられている。   In the shield machine of Patent Document 2, four telescopic arms are connected to four radially extending spokes so as to be expandable and contractable in the radial direction by hydraulic jacks, and each corner arm and the corner cutter are hydraulically driven to rotate. A motor is installed.

特許文献３のシールド掘進機では、掘進機本体の中心軸と同心の軸を持つ固定軸に固定歯車が固定的に設けられ、この固定歯車に遊星歯車が噛合し、遊星歯車に第１歯車が噛合している。第１ケーシングが固定軸の回りに回転可能に設けられ、この第１ケーシングに固定歯車と遊星歯車と第１歯車が収容され、遊星歯車が第１ケーシングに回転可能に支持されている。第１ケーシングの先端部分から第２ケーシングが前方へ突出しており、第２ケーシングの中空軸部の後端部分が第１ケーシングに回転可能に内嵌され、その中空軸部に第１歯車が外嵌状に固定されている。   In the shield machine of Patent Document 3, a fixed gear is fixedly provided on a fixed shaft having an axis concentric with the central axis of the machine body, the planetary gear meshes with the fixed gear, and the planetary gear has the first gear. Meshed. A first casing is rotatably provided around a fixed shaft. A fixed gear, a planetary gear, and a first gear are accommodated in the first casing, and the planetary gear is rotatably supported by the first casing. The second casing protrudes forward from the front end portion of the first casing, the rear end portion of the hollow shaft portion of the second casing is rotatably fitted in the first casing, and the first gear is externally attached to the hollow shaft portion. It is fixed in a fitting shape.

第２ケーシングの中空軸部に軸部材が回転可能に挿通され、この軸部材の前端部に第２歯車が固定的に設けられ、この第２歯車に第３歯車が噛合している。中空腕部に第２，第３歯車が収容されると共に回転可能に支持され、第３歯車にカッターが固定的に設けられている。ケーシング駆動モータにより、カッターが第１，第２ケーシングを介して固定軸の回りに回転駆動され、これと同期連動して、カッターが固定，遊星，第１歯車、第２ケーシングを介して軸部材の回りに回転駆動される。所定の断面形状のトンネルを掘削可能に、固定歯車と第１歯車の歯数の比が設定される。カッターは掘進機本体側に設けたカッター駆動モータにより軸部材、第２，第３歯車等を介して独立に回転駆動され自転する。   A shaft member is rotatably inserted into the hollow shaft portion of the second casing, a second gear is fixedly provided at the front end portion of the shaft member, and a third gear is engaged with the second gear. The hollow arm portion accommodates the second and third gears and is rotatably supported, and the third gear is fixedly provided with a cutter. The cutter is driven to rotate around the fixed shaft via the first and second casings by the casing drive motor, and in synchronization with this, the cutter is fixed, the planetary gear, the first gear, and the shaft member via the second casing. It is driven around. The ratio of the number of teeth of the fixed gear and the first gear is set so that a tunnel having a predetermined cross-sectional shape can be excavated. The cutter rotates and rotates independently through a shaft member, second and third gears, etc., by a cutter drive motor provided on the side of the machine body.

特許第２８９８９６８号公報Japanese Patent No. 2898968 特開２００１−５５８９０号公報JP 2001-55890 A 特開平９−１１９２８８号公報JP-A-9-119288

特許文献１〜３のシールド掘進機では、種々の断面形状のトンネルを掘削可能に構成できる。しかし、所定の断面形状のトンネルを掘削するために、特許文献１の技術では、遊星カッターの輪郭形状を遊星カッターの自転数と公転数との比に応じて設定しなければならないし、特許文献３の技術では、固定歯車と第１歯車の歯数の比を設定しなければならない。つまり、前記所定の断面形状以外の断面形状のトンネルを掘削する場合には、前記設定を変更しなければならないが、その設定変更は非常に大変であり、当然、掘削途中のトンネルの断面形状を変更することも不可能であり、汎用性が極めて低い。   In the shield machine of Patent Documents 1 to 3, tunnels having various cross-sectional shapes can be configured to be excavable. However, in order to excavate a tunnel having a predetermined cross-sectional shape, in the technique of Patent Document 1, the contour shape of the planetary cutter must be set according to the ratio of the rotation number and revolution number of the planetary cutter. In the third technique, the ratio of the number of teeth of the fixed gear and the first gear must be set. In other words, when excavating a tunnel having a cross-sectional shape other than the predetermined cross-sectional shape, the setting must be changed, but the setting change is very difficult, and naturally the cross-sectional shape of the tunnel being excavated is changed. It cannot be changed, and the versatility is extremely low.

特許文献２のシールド掘進機は、スポークタイプのカッターヘッドを備えたものであり、各スポークに伸縮腕が径方向へ伸縮可能に連結されているため、特に伸縮腕を大きく伸長した状態では、伸縮腕に大きな回転抵抗が作用するため、その伸縮腕や伸縮腕をスポークに連結する部分において、強度的にまた耐久性の面で問題が生じる。例えば、このシールド掘進機を、非常に固い岩盤等の地質を含む地山を掘削するシールド掘進機として適用する場合には、実用に耐えない可能性が高い。   The shield machine of Patent Document 2 is equipped with a spoke-type cutter head, and the telescopic arm is connected to each spoke so that it can expand and contract in the radial direction. Since a large rotational resistance acts on the arm, there arises a problem in terms of strength and durability in the telescopic arm and the portion where the telescopic arm is connected to the spoke. For example, when this shield machine is applied as a shield machine for excavating ground including geology such as very hard rock, there is a high possibility that it will not be practically used.

特許文献３のシールド掘進機では、カッターを固定軸の回りに回転させると共に、これと同期連動させて軸部材の回りに回転させるために、更には、カッターを掘進機本体側に設けたカッター駆動モータにより独立に回転駆動するために、第１，第２ケーシング、固定歯車、遊星歯車、第１〜第３歯車等を有する非常に複雑な構造となり、製作コスト的にも不利である。また、カッターを固定軸の回りに回転駆動し且つカッターを軸部材の回りに回転駆動する非常に大きな力を第１，第２ケーシングに入力し伝達させることになるため、その点、強度的にまた耐久性の面で問題が生じる虞がある。   In the shield machine of Patent Document 3, in order to rotate the cutter around the fixed shaft and to rotate around the shaft member in synchronization with the cutter, the cutter is further provided on the side of the machine. In order to rotate independently by the motor, it has a very complicated structure including the first and second casings, the fixed gear, the planetary gear, the first to third gears, etc., which is disadvantageous in terms of manufacturing cost. In addition, since a very large force for rotating the cutter around the fixed shaft and rotating the cutter around the shaft member is input to the first and second casings and transmitted, In addition, there is a risk of problems in terms of durability.

本発明の目的は、種々の断面形状のトンネルを掘削でき、掘削するトンネルの断面形状の変更を簡単に行うことができ、汎用性が極めて高く、構造を簡単化でき、掘削能力が高く、強度的また耐久性の面で優れ、あらゆる土質を含む地山を掘削する場合に対応できる、シールド掘進機を提供することである。   The purpose of the present invention is to be able to excavate tunnels of various cross-sectional shapes, can easily change the cross-sectional shape of the tunnel to be excavated, is extremely versatile, can simplify the structure, has high excavation capability, strength It is to provide a shield machine that is excellent in terms of durability and durability, and can cope with excavation of natural ground including all kinds of soil.

請求項１のシールド掘進機は、胴体を含む掘進機本体と、掘進機本体を推進させる複数のシールドジャッキと、掘進機本体の前端側の地山を掘削する掘削手段とを備えたシールド掘進機において、前記掘進機本体の前端側部分に掘進機本体の中心軸と平行な第１軸心の回りに回転可能に支持された第１回転部材と、前記第１回転部材を回転駆動する第１回転駆動手段と、前記第１回転部材に前記第１軸心と平行で且つこの第１軸心から離隔した位置にある第２軸心の回りに回転可能に支持された第２回転部材と、前記第２回転部材を第１回転部材に対して第１回転駆動手段とは独立に回転駆動する第２回転駆動手段と、前記第２回転部材に前記第２軸心と平行で且つこの第２軸心から離隔した位置にある第３軸心の回りに回転可能に支持され表面に複数のカッタービット又はローラカッターを装備した回転型カッターと、前記回転型カッターを第２回転部材に対して第１，第２回転駆動手段とは独立に回転駆動する油圧モータであって、前記第２回転部材に内蔵された油圧モータを有する第３回転駆動手段とを備え、前記回転型カッターが掘進機本体の中心軸近傍の前方の地山を掘削可能に構成されたことを特徴とする。
The shield machine according to claim 1 includes a machine body including a fuselage, a plurality of shield jacks for propelling the machine body, and excavation means for excavating a natural ground on a front end side of the machine body. A first rotating member rotatably supported around a first axis parallel to the central axis of the excavator main body at a front end side portion of the excavator main body, and a first rotating the first rotating member. A rotation drive means; a second rotation member supported by the first rotation member so as to be rotatable around a second axis that is parallel to the first axis and spaced apart from the first axis; Second rotation driving means for rotating the second rotation member relative to the first rotation member independently of the first rotation driving means; and the second rotation member parallel to the second axis and the second rotation member. Rotatably supported around a third axis that is spaced from the axis. A rotatable cutter equipped with a plurality of cutter bits or roller cutter on the surface, first the rotatable cutter with respect to the second rotary member and the second rotary drive means comprising a hydraulic motor for rotating independently, 3rd rotation drive means which has a hydraulic motor built in the 2nd rotation member, and the rotary cutter was constituted so that excavation of the front ground near the central axis of an excavator main body was possible, To do.

このシールド掘進機では、胴体を含む掘進機本体が複数のシールドジャッキにより推進され、掘削手段により掘進機本体の前端側の地山が掘削され、この掘削手段として、第１回転部材、第２回転部材、回転型カッター、第１〜第３回転駆動手段が設けられている。掘進機本体の前端側部分に第１回転部材が第１軸心の回りに回転可能に支持され、第１回転部材に第２回転部材が第２軸心の回りに回転可能に支持され、第２回転部材に回転型カッターが第３軸心の回りに回転可能に支持されている。第１軸心は掘進機本体の中心軸と平行で、第２軸心は第１軸心と平行で且つ第１軸心から離隔した位置にあり、第３軸心は第２軸心と平行で且つ第２軸心から離隔した位置にある。   In this shield machine, the machine body including the fuselage is propelled by a plurality of shield jacks, and the ground at the front end side of the machine body is excavated by the excavating means. As the excavating means, the first rotating member, the second rotation A member, a rotary cutter, and first to third rotation driving means are provided. A first rotating member is supported on the front end portion of the excavator main body so as to be rotatable about the first axis, and a second rotating member is supported on the first rotating member so as to be rotatable about the second axis. A rotary cutter is supported by the two-rotating member so as to be rotatable around the third axis. The first axis is parallel to the central axis of the machine body, the second axis is parallel to the first axis and spaced from the first axis, and the third axis is parallel to the second axis. And at a position separated from the second axis.

第１回転駆動手段により第１回転部材が第１軸心の回りに回転駆動されて、第２回転部材と回転型カッターも一体的に第１軸心の回りに回転し、第２回転駆動手段により第２回転部材が第１回転部材に対して第２軸心の回りに回転駆動されて、回転型カッターも一体的に第２軸心の回りに回転し、第３回転駆動手段により回転型カッターが第２回転部材に対して第３軸心の回りに回転駆動され、これら第１〜第３回転駆動手段は、第１回転部材、第２回転部材、回転型カッターを夫々独立に駆動する。   The first rotating member is driven to rotate about the first axis by the first rotation driving means, and the second rotating member and the rotary cutter are also rotated about the first axis integrally, and the second rotating driving means. As a result, the second rotating member is driven to rotate about the second axis relative to the first rotating member, and the rotary cutter also rotates about the second axis integrally. The cutter is driven to rotate about the third axis with respect to the second rotating member, and the first to third rotating driving units independently drive the first rotating member, the second rotating member, and the rotary cutter. .

第１軸心と第２軸心との距離をＲ、第２軸心と第３軸心との距離をｒ（＜Ｒ）、第３軸心を中心とする回転型カッターの掘削半径をｅとした場合、正面視にて、第２軸心の移動軌跡は第１軸心を中心とする半径Ｒの円周になり、第３軸心の移動軌跡は第２軸心を中心とする半径ｒの円周になり、回転型カッターで掘削可能な掘削可能範囲は、Ｒ≦（ｒ＋ｅ）の場合、第１軸心を中心とする半径（Ｒ＋ｒ＋ｅ）の円になり、Ｒ＞（ｒ＋ｅ）の場合、第１軸心を中心とする半径（Ｒ−（ｒ＋ｅ））の円周と半径（Ｒ＋ｒ＋ｅ）の円周との間のリング状部分になる。   The distance between the first axis and the second axis is R, the distance between the second axis and the third axis is r (<R), and the excavation radius of the rotary cutter centering on the third axis is e. , In the front view, the movement locus of the second axis is the circumference of the radius R centered on the first axis, and the movement locus of the third axis is a radius centered on the second axis. The excavable range that can be excavated by a rotary cutter with a circumference of r is a circle with a radius (R + r + e) centered on the first axis when R ≦ (r + e), and R> (r + e) In this case, a ring-shaped portion is formed between a circumference having a radius (R− (r + e)) centered on the first axis and a circumference having a radius (R + r + e).

第１，第２回転駆動手段により第１，第２回転部材を夫々独立駆動するため、これら第１，第２回転駆動手段を制御することで、回転型カッターを前記掘削可能範囲内で自由に移動させ、第１軸心からトンネル内面までの距離を、最大（Ｒ＋ｒ＋ｅ）となる所定距離以上の自由な距離に変化させて、種々の自由な断面形状のトンネルを掘削可能になる。   Since the first and second rotary drive means independently drive the first and second rotary members, respectively, the rotary cutter can be freely moved within the excavable range by controlling these first and second rotary drive means. By moving, the distance from the first axis to the inner surface of the tunnel is changed to a free distance greater than or equal to a predetermined distance that is the maximum (R + r + e), and tunnels with various free cross-sectional shapes can be excavated.

請求項１の発明において、次の構成を採用可能である。
前記掘進機本体は、掘削土を回収可能なチャンバーと、そのチャンバーの後端を仕切る隔壁とを有し、前記第１回転部材は、前記隔壁の一部を構成する板部材を有する回転ドラムからなる（請求項２）。或いは、前記第１回転部材は、前記隔壁の前側に配置されて放射状に延びる１又は複数のスポークを備えた回転部材からなる。 In the invention of claim 1, the following configuration can be adopted.
The excavator main body has a chamber capable of collecting excavated soil and a partition partitioning the rear end of the chamber, and the first rotating member is a rotating drum having a plate member constituting a part of the partition. (Claim 2). Alternatively, the first rotating member includes a rotating member that is disposed on the front side of the partition wall and includes one or a plurality of spokes extending radially.

前記第１回転駆動手段は、掘進機本体に取付けられた複数の第１アクチュエータを有し、前記第２回転駆動手段は、第１回転部材に取付けられた複数の第２アクチュエータを有し、前記第３回転駆動手段は、第２回転部材に取付けられた複数の前記油圧モータを有する（請求項３）。尚、第１〜第３アクチュエータを第１〜第３油圧モータとすることが好ましい。前記第２回転部材は、第１回転部材の外周部付近に回転可能に支持されたカッター支持フレームからなり、前記第２回転部材と回転型カッターは、正面視にて回転型カッターが第１回転部材の外周よりも外側へ移動可能に構成する（請求項４）。 The first rotation driving means has a plurality of first actuators attached to an excavator main body, and the second rotation driving means has a plurality of second actuators attached to a first rotation member, The third rotation driving means includes a plurality of the hydraulic motors attached to the second rotation member. The first to third actuators are preferably first to third hydraulic motors. The second rotating member includes a cutter support frame that is rotatably supported in the vicinity of the outer peripheral portion of the first rotating member, and the second rotating member and the rotary cutter have a rotary cutter that rotates first in a front view. It is configured to be movable outward from the outer periphery of the member.

前記回転型カッターは、円形の前面とこの前面の外周に連なる円筒状外周面とを有し、前記前面と円筒状外周面に複数のカッタービット又はローラカッターを装備する。或いは、前記回転型カッターは、円形の前面とこの前面の外周に連なる環状テーパ面とこの環状テーパ面の後端に連なる円筒状外周面とを有し、前記前面と環状テーパ面と円筒状外周面に複数のカッタービット又はローラカッターを装備する。   The rotary cutter has a circular front surface and a cylindrical outer peripheral surface connected to the outer periphery of the front surface, and a plurality of cutter bits or roller cutters are provided on the front surface and the cylindrical outer peripheral surface. Alternatively, the rotary cutter has a circular front surface, an annular tapered surface connected to the outer periphery of the front surface, and a cylindrical outer peripheral surface connected to the rear end of the annular tapered surface, and the front surface, the annular tapered surface, and the cylindrical outer periphery. Equipped with multiple cutter bits or roller cutters on the surface.

前記第２回転部材に異なる複数の第３軸心の回りに夫々回転可能に支持された複数の回転型カッターと、これら複数の回転型カッターを夫々回転駆動する複数の前記油圧モータとを備える（請求項５）。前記第１回転部材に異なる複数の第２軸心の回りに夫々回転可能に支持された複数の第２回転部材と、これら複数の第２回転部材を夫々回転駆動する複数の第２回転駆動手段とを備える（請求項６）。前記第１〜第３回転駆動手段を駆動制御する駆動制御手段を備え、前記駆動制御手段は、掘削するトンネルの断面形状に応じて第１回転部材の基準位相角からの回転位相角に対応付けて第２回転部材の回転角を制御するように、第１，第２回転駆動手段を制御する（請求項７）。 A plurality of rotary cutters rotatably supported around a plurality of different third axes on the second rotary member, and a plurality of hydraulic motors that respectively rotate and drive the plurality of rotary cutters ( Claim 5). A plurality of second rotation members supported by the first rotation member so as to be rotatable around a plurality of different second axes, and a plurality of second rotation driving means for rotating the plurality of second rotation members, respectively. (Claim 6). Drive control means for drivingly controlling the first to third rotation drive means, wherein the drive control means is associated with the rotation phase angle from the reference phase angle of the first rotation member according to the cross-sectional shape of the tunnel to be excavated. Then, the first and second rotation driving means are controlled so as to control the rotation angle of the second rotating member.

前記第１回転部材に前記第１軸心と平行で且つこの第１軸心と前記第２軸心から離隔した位置にある第４軸心の回りに回転可能に支持され表面に複数のカッタービット又はローラカッターを装備した回転型補助カッターと、前記回転型補助カッターを回転駆動する第４回転駆動手段とを備える（請求項８）。前記第２回転部材の第２軸心と回転型補助カッターの第４軸心とが、第１回転部材の第１軸心に対して対称位置になるように設定する。前記チャンバーの内部に配置され第１回転部材に回転可能に支持された攪拌羽根と、前記攪拌羽根を回転駆動する攪拌羽根回転駆動手段とを備える（請求項９）。   A plurality of cutter bits supported on the surface of the first rotating member so as to be rotatable around a fourth axis that is parallel to the first axis and spaced apart from the first axis and the second axis. Alternatively, a rotary auxiliary cutter equipped with a roller cutter, and a fourth rotation driving means for rotating the rotary auxiliary cutter are provided. The second axis of the second rotating member and the fourth axis of the rotary auxiliary cutter are set to be symmetrical with respect to the first axis of the first rotating member. A stirring blade disposed inside the chamber and rotatably supported by a first rotating member, and a stirring blade rotation driving unit that rotationally drives the stirring blade.

回転型カッターはカッタービット又はローラカッターを取付けるカッターフレームを有し、カッターフレームの内部に前記隔壁側から作業者が入り込めてカッタービット又はローラカッターを交換可能な作業スペースを形成する。前記回転型カッターに加泥材を供給して回転型カッターの前方へ噴射させる加泥材供給手段を備える。前記攪拌羽根に加泥材を供給して攪拌羽根の前方へ噴射させる加泥材供給手段を備える。   The rotary cutter has a cutter frame for attaching a cutter bit or a roller cutter, and an operator enters the inside of the cutter frame from the partition side to form a work space in which the cutter bit or the roller cutter can be replaced. A muddy material supply means for supplying a muddy material to the rotary cutter and spraying it to the front of the rotary cutter is provided. A mud material supply means is provided for supplying the mud material to the stirring blade and spraying it to the front of the stirring blade.

請求項１のシールド掘進機によれば、掘進機本体の前端側部分に掘進機本体の中心軸と平行な第１軸心の回りに回転可能に支持された第１回転部材、第１回転部材を回転駆動する第１回転駆動手段、第１回転部材に第１軸心と平行で第１軸心から離隔した位置にある第２軸心の回りに回転可能に支持された第２回転部材、第２回転部材を第１回転部材に対して第１回転駆動手段とは独立に回転駆動する第２回転駆動手段、第２回転部材に第２軸心と平行で且つ第２軸心から離隔した位置にある第３軸心の回りに回転可能に支持され表面に複数のカッタービット又はローラカッターを装備した回転型カッター、回転型カッターを第２回転部材に対して第１，第２回転駆動手段とは独立に回転駆動する油圧モータであって、第２回転部材に内蔵された油圧モータを有する第３回転駆動手段とを備え、回転型カッターが掘進機本体の中心軸近傍の前方の地山を掘削可能に構成した。 According to the shield machine of Claim 1, the 1st rotation member and the 1st rotation member which were supported by the front end side part of an excavation machine main body so that rotation was possible around the 1st axis parallel to the central axis of an excavation machine main body. First rotation driving means for rotationally driving, a second rotating member supported by the first rotating member so as to be rotatable around a second axis parallel to the first axis and spaced from the first axis, A second rotary driving means for driving the second rotary member to rotate independently of the first rotary drive means with respect to the first rotary member; the second rotary member is parallel to the second axis and spaced from the second axis; A rotary cutter that is supported rotatably around a third axis at a position and is equipped with a plurality of cutter bits or roller cutters on the surface, and a rotary cutter with respect to the second rotary member. for rotating independently from the a hydraulic motor, it is built in the second rotating member And a third rotary drive means having a hydraulic motor, a rotary cutter has been excavation constructed in front of the natural ground in the vicinity of the central axis the shield machine main body.

従って、種々の自由な断面形状のトンネルを掘削することが可能になり、所定の断面形状のトンネルを掘削する場合、その断面形状に応じて第１回転部材の基準位相角からの回転位相角に対応付けて第２回転部材の回転角を制御するように、第１，第２回転駆動手段を駆動制御することで実現できる。つまり、第１，第２回転駆動手段の制御を変更することで、機械的な構造を変更することなく、掘削するトンネルの断面形状の変更を簡単に行うことができ、掘削途中のトンネルの断面形状を変更することも可能であり、汎用性が極めて高くなる。トンネルのカーブ部分を掘削する場合等、トンネルを少し拡大するために地山を余掘りする必要がある場合でも、その余掘りを回転型カッターで行うことができ、既存のコピーカッターを省略することが可能になる。   Accordingly, tunnels having various free cross-sectional shapes can be excavated, and when excavating a tunnel having a predetermined cross-sectional shape, the rotational phase angle from the reference phase angle of the first rotating member is set according to the cross-sectional shape. This can be realized by controlling the driving of the first and second rotation driving means so as to control the rotation angle of the second rotating member in association with each other. That is, by changing the control of the first and second rotation driving means, the cross-sectional shape of the tunnel to be excavated can be easily changed without changing the mechanical structure, and the cross-section of the tunnel being excavated It is also possible to change the shape, and the versatility becomes extremely high. Even if it is necessary to dug the ground to slightly enlarge the tunnel, such as when excavating the curved part of the tunnel, the dug can be done with a rotary cutter and the existing copy cutter should be omitted Is possible.

しかも、第１〜第３回転駆動手段により第１，第２回転部材、回転型カッターを独立に回転駆動するため、第１，第２回転部材、回転型カッターを連動連結させる複雑な構造が不要となり、構造を簡単化でき、製作コスト的にも有利になり、更に、実質的に回転型カッターを第１軸心の回りにも第２軸心の回りにも第３軸心の回りにも回転させることが可能であり、回転型カッターの軌道を能率よく掘削できる軌道に設定することもできるため、掘削能力が非常に高くなり、強度的また耐久性の面で優れたものに構成することができ、依って、あらゆる土質を含む地山を掘削する場合に対応することが可能になる。   In addition, since the first and second rotary members and the rotary cutter are independently driven to rotate by the first to third rotary drive means, a complicated structure for interlocking and connecting the first and second rotary members and the rotary cutter is unnecessary. This simplifies the structure and is advantageous in terms of manufacturing cost. Further, the rotary cutter is substantially placed around the first axis, the second axis, and the third axis. It is possible to rotate, and the trajectory of the rotary cutter can be set to a trajectory that can be excavated efficiently, so the excavation capability becomes very high, and it should be configured with excellent strength and durability Therefore, it becomes possible to cope with excavation of natural ground including any soil.

請求項２のシールド掘進機によれば、掘進機本体は、掘削土を回収可能なチャンバーと、そのチャンバーの後端を仕切る隔壁とを有し、第１回転部材は、隔壁の一部を構成する板部材を有する回転ドラムからなるので、第１回転部材の回転方向に対する強度、剛性が非常に高くなり、強度的また耐久性の面で非常に優れたものとなる。   According to the shield machine of claim 2, the machine has a chamber capable of collecting excavated soil and a partition wall that partitions the rear end of the chamber, and the first rotating member constitutes a part of the partition wall. Therefore, the strength and rigidity of the first rotating member in the rotating direction are very high, and the strength and durability are very excellent.

請求項３のシールド掘進機によれば、第１回転駆動手段は、掘進機本体に取付けられた複数の第１アクチュエータを有し、第２回転駆動手段は、第１回転部材に取付けられた複数の第２アクチュエータを有し、第３回転駆動手段は、第２回転部材に取付けられた複数の前記油圧モータを有するので、第１回転部材、第２回転部材、回転型カッターを夫々独立に確実に回転駆動でき、第１〜第３回転駆動手段の構造も簡単化できる。 According to the shield machine of claim 3, the first rotation drive means has a plurality of first actuators attached to the main body of the excavator, and the second rotation drive means has a plurality of attachments attached to the first rotation member. The third rotation driving means has a plurality of the hydraulic motors attached to the second rotation member, so that the first rotation member, the second rotation member, and the rotary cutter can be independently and reliably secured. And the structure of the first to third rotation driving means can be simplified.

請求項４のシールド掘進機によれば、第２回転部材は、第１回転部材の外周部付近に回転可能に支持されたカッター支持フレームからなり、第２回転部材と回転型カッターは、正面視にて回転型カッターが第１回転部材の外周よりも外側へ移動可能に構成したので、第１回転部材よりもサイズが大きな種々の断面形状のトンネルを確実に掘削できる。   According to the shield machine of claim 4, the second rotating member is composed of a cutter support frame that is rotatably supported near the outer periphery of the first rotating member, and the second rotating member and the rotary cutter are viewed from the front. Since the rotary cutter is configured to be movable outward from the outer periphery of the first rotating member, tunnels having various cross-sectional shapes larger in size than the first rotating member can be reliably excavated.

請求項５のシールド掘進機によれば、第２回転部材に異なる複数の第３軸心の回りに夫々回転可能に支持された複数の回転型カッターと、これら複数の回転型カッターを夫々回転駆動する複数の前記油圧モータとを備えたので、掘削能力を高めることができる。 According to the shield machine of claim 5, a plurality of rotary cutters rotatably supported around a plurality of different third axes by the second rotary member, and the plurality of rotary cutters are driven to rotate. Since the plurality of hydraulic motors are provided, excavation capability can be increased.

請求項６のシールド掘進機によれば、第１回転部材に異なる複数の第２軸心の回りに夫々回転可能に支持された複数の第２回転部材と、これら複数の第２回転部材を夫々回転駆動する複数の第２回転駆動手段とを備えたので、掘削能力を高めることができる。   According to the shield machine of the sixth aspect, the plurality of second rotating members that are rotatably supported around the plurality of different second axes by the first rotating member, and the plurality of second rotating members, respectively. Since a plurality of second rotational drive means for rotational driving are provided, excavation capability can be enhanced.

請求項７のシールド掘進機によれば、第１〜第３回転駆動手段を駆動制御する駆動制御手段を備え、駆動制御手段は、掘削するトンネルの断面形状に応じて第１回転部材の基準位相角からの回転位相角に対応付けて第２回転部材の回転角を制御するように、第１，第２回転駆動手段を制御するので、所定の断面形状のトンネルを確実に掘削でき、掘削するトンネルの断面形状の変更を簡単に行うことができる。   According to the shield machine of the seventh aspect, the drive control means for driving and controlling the first to third rotation drive means is provided, and the drive control means has a reference phase of the first rotation member according to the cross-sectional shape of the tunnel to be excavated. Since the first and second rotation driving means are controlled so as to control the rotation angle of the second rotation member in association with the rotation phase angle from the angle, the tunnel having a predetermined cross-sectional shape can be reliably excavated and excavated. The cross-sectional shape of the tunnel can be easily changed.

請求項８のシールド掘進機によれば、第１回転部材に前記第１軸心と平行で且つこの第１軸心と前記第２軸心から離隔した位置にある第４軸心の回りに回転可能に支持され表面に複数のカッタービット又はローラカッターを装備した回転型補助カッターと、回転型補助カッターを回転駆動する第４回転駆動手段とを備えたので、掘削能力を高め、回転型カッターで掘削できない部分をこの回転型補助カッターで掘削できるように構成できる。   According to the shield machine of claim 8, the first rotating member rotates around the fourth axis that is parallel to the first axis and spaced apart from the first axis and the second axis. Since the rotary auxiliary cutter equipped with a plurality of cutter bits or roller cutters supported on the surface and the fourth rotary drive means for rotationally driving the rotary auxiliary cutter are provided, the excavation capability is improved and the rotary cutter is used. A portion that cannot be excavated can be configured to be excavated by this rotary auxiliary cutter.

請求項９のシールド掘進機によれば、チャンバーの内部に配置され第１回転部材に回転可能に支持された攪拌羽根と、攪拌羽根を回転駆動する攪拌羽根回転駆動手段とを備えたので、掘削土を攪拌してチャンバーから外部へ搬送し易くすることができ、その攪拌羽根は攪拌羽根回転駆動手段で自転すると共に、第１回転部材と一体的に回転するため、攪拌性能が非常に向上する。   According to the shield machine of the ninth aspect, since the agitating blade disposed inside the chamber and rotatably supported by the first rotating member, and the agitating blade rotation driving means for rotationally driving the agitating blade, excavation is performed. The soil can be easily stirred and conveyed from the chamber to the outside. The stirring blades are rotated by the stirring blade rotation driving means and rotate integrally with the first rotating member, so that the stirring performance is greatly improved. .

本発明のシールド掘進機は、胴体を含む掘進機本体と、掘進機本体を推進させる複数のシールドジャッキと、掘進機本体の前端側の地山を掘削する掘削装置とを備えたものであり、この掘削装置として、前記掘進機本体の前端側部分に掘進機本体の中心軸と平行な第１軸心の回りに回転可能に支持された第１回転部材と、前記第１回転部材を回転駆動する第１回転駆動手段と、前記第１回転部材に前記第１軸心と平行で且つこの第１軸心から離隔した位置にある第２軸心の回りに回転可能に支持された第２回転部材と、前記第２回転部材を第１回転部材に対して第１回転駆動手段とは独立に回転駆動する第２回転駆動手段と、前記第２回転部材に前記第２軸心と平行で且つこの第２軸心から離隔した位置にある第３軸心の回りに回転可能に支持され表面に複数のカッタービットを装備した回転型カッターと、前記回転型カッターを第２回転部材に対して第１，第２回転駆動手段とは独立に回転駆動する第３回転駆動手段とを備えている。   The shield machine of the present invention includes an excavator body including a fuselage, a plurality of shield jacks for propelling the excavator body, and a drilling device that excavates a natural ground on the front end side of the machine. As the excavator, a first rotating member supported on a front end side portion of the excavator main body so as to be rotatable around a first axis parallel to the central axis of the excavator main body, and the first rotating member are driven to rotate. And a second rotation supported by the first rotation member so as to be rotatable around a second axis that is parallel to the first axis and spaced apart from the first axis. A member, a second rotation driving means for rotating the second rotation member with respect to the first rotation member independently of the first rotation driving means, and the second rotation member parallel to the second axis and This is supported so as to be rotatable around a third axis that is spaced from the second axis. And a rotary cutter equipped with a plurality of cutter bits on its surface, and a third rotary drive means for driving the rotary cutter to rotate independently of the first and second rotary drive means with respect to the second rotary member. ing.

図１〜図３に示すように、シールド掘進機１は、胴体１０を含む掘進機本体２と、掘進機本体２を推進させる複数のシールドジャッキ３と、胴体１０の前胴１１と後胴１２とを中折れさせる複数の中折れジャッキ４と、掘進機本体２の前端側の地山を掘削する掘削装置５と、掘削装置５で掘削した掘削土を排出する左右１対のスクリューコンベア６ａを有する掘削土排出装置６と、掘削装置５で掘削したトンネルＴの内面にセグメントＳを組付ける左右１対のエレクタ装置７と、トンネルＴの内面に組付けたセグメントＳを保持する左右１対のセグメント保持装置８と、トンネルＴの内面とその内面に組付けたセグメントＳとの間にモルタルを注入する裏込注入装置９等を備えている。   As shown in FIGS. 1 to 3, the shield machine 1 includes an excavator body 2 including a body 10, a plurality of shield jacks 3 for propelling the machine body 2, a front body 11 and a rear body 12 of the body 10. And a pair of left and right screw conveyors 6 a for discharging the excavated soil excavated by the excavator 5. A pair of left and right erector devices 7 that assemble the segment S on the inner surface of the tunnel T excavated by the digging device 5, and a pair of left and right holding the segment S that is assembled on the inner surface of the tunnel T. A segment holding device 8 and a back-injecting device 9 for injecting mortar between the inner surface of the tunnel T and the segment S assembled on the inner surface are provided.

掘進機本体２の胴体１０は前胴１１と後胴１２とを有し、前胴１１の後端部と後胴１２の前端部が中折れ部１３を介して中折れ可能に連結されている。前胴１１と後胴１２は、夫々、上下長と左右長の比が約１：２の略縦断面矩形の角筒状に形成され、その上壁及び左右の側壁と、下壁及び左右の側壁との角部分は湾曲状に形成されている。前胴１１の長さは後胴１１の長さの約２倍あり、中折れ部１３においては、後胴１２の前端部に環状の部分球面座１４が形成され、その部分球面座１４に前胴１１の後端部が外嵌され、この前胴１１と後胴１２の嵌合部間に環状シール部材１５が装着されている。   The body 10 of the excavator main body 2 has a front cylinder 11 and a rear cylinder 12, and the rear end portion of the front cylinder 11 and the front end portion of the rear cylinder 12 are connected to each other through a middle folding portion 13 so as to be able to be folded. . The front cylinder 11 and the rear cylinder 12 are each formed in a rectangular tube shape having a substantially vertical cross-section with a ratio of up / down length to left / right length of about 1: 2, and its upper wall, left and right side walls, lower wall, A corner portion with the side wall is formed in a curved shape. The length of the front cylinder 11 is about twice the length of the rear cylinder 11, and an annular partial spherical seat 14 is formed at the front end portion of the rear cylinder 12 in the middle bent portion 13. A rear end portion of the body 11 is fitted outside, and an annular seal member 15 is mounted between the fitting portions of the front body 11 and the rear body 12.

前胴１１は、その前後長が上下長の約１．５倍に形成され、前胴１１の内部には、その前端から後方へ前胴１１の約１／３の長さ部分に鉛直な隔壁１６が設けられている。隔壁１６は、その外周部が前胴１１の内面に固着された固定隔壁１７と、固定隔壁１７に回転可能に内嵌された円板状の可動隔壁１８からなり、可動隔壁１８は、その直径が内胴１１の上下長よりも少し短い長さに形成されている。この隔壁１６と前胴１１のうち隔壁１６よりも前方へ突出している部分とで、掘削装置５で掘削した掘削土を回収するチャンバー１９が形成されている。隔壁１６はチャンバー１９の後端を仕切るものである。   The front cylinder 11 is formed so that its front and rear length is about 1.5 times the vertical length, and the front cylinder 11 has a vertical partition wall in a length portion of about 1/3 of the front cylinder 11 from the front end to the rear. 16 is provided. The partition wall 16 includes a fixed partition wall 17 whose outer peripheral portion is fixed to the inner surface of the front barrel 11 and a disk-shaped movable partition wall 18 rotatably fitted in the fixed partition wall 17. The movable partition wall 18 has a diameter thereof. Is formed to be slightly shorter than the vertical length of the inner cylinder 11. A chamber 19 that collects excavated soil excavated by the excavator 5 is formed at the partition wall 16 and a portion of the front body 11 that projects forward from the partition wall 16. The partition wall 16 partitions the rear end of the chamber 19.

前胴１１の内面には、隔壁１６から後方へ前胴１１の約１／３の長さ部分に、円筒部２１を有する環状部材２０が固着され、この環状部材２０の前端の板部材で固定隔壁１７が形成されている。環状部材２０の円筒部２１に、掘削装置５の回転ドラム４０が回転可能に支持され、この回転ドラム４０の前端の板部材４１で可動隔壁１８が形成されている。前胴１１の固定隔壁１７の後端付近部において、上端部に左右１対の地山探査装置２２ａが可動に設けられ、下端部に左右１対の可動ソリ２ｂが可動に設けられ、可動ソリ２２ｂは胴体１０のローリングを防止し、胴体１０を所期の姿勢に保持する為のものである。   An annular member 20 having a cylindrical portion 21 is fixed to the inner surface of the front cylinder 11 from the partition wall 16 to the rear of the front cylinder 11 at about １ ／ length, and is fixed by a plate member at the front end of the annular member 20. A partition wall 17 is formed. A rotary drum 40 of the excavator 5 is rotatably supported on the cylindrical portion 21 of the annular member 20, and the movable partition wall 18 is formed by a plate member 41 at the front end of the rotary drum 40. In the vicinity of the rear end of the fixed bulkhead 17 of the front barrel 11, a pair of left and right ground exploration devices 22a are movably provided at the upper end, and a pair of left and right movable sleds 2b are movably provided at the lower end. 22b is for preventing the body 10 from rolling and holding the body 10 in an intended posture.

固定隔壁１７には、左右１対のマンロック２３と、左右１対のマンホール２４が設けられ、左右１対の排土口２５が形成され、６つの土圧計２６が設けられ、６つの加泥材注入口２７が形成されている。マンロック２４は、その出入口の空間を掘進機本体２の内部と仕切ってチャンバー１９内の圧力近くに昇圧させる機能を有する。可動隔壁１８には、１対のマンホール２８が設けられ、４つの加泥材注入口２９が形成されている。   The fixed partition wall 17 is provided with a pair of left and right manlocks 23 and a pair of left and right manholes 24, a pair of left and right earth discharge ports 25 is formed, six earth pressure gauges 26 are provided, and six mudgings are provided. A material inlet 27 is formed. The manlock 24 has a function of partitioning the entrance / exit space from the interior of the excavator body 2 and increasing the pressure close to the pressure in the chamber 19. The movable partition wall 18 is provided with a pair of manholes 28, and four mud additive inlets 29 are formed.

後胴１２は、その前後長が上下長の約１／２の長さに形成され、後胴１２の内面には、その前端部にリングウェブ３０が固着され、後端部分にテールシール３１が設けられている。複数のシールドジャッキ３は、前胴１１の後端部分と後胴１２の前端部分とに亙って、その内面に沿って周方向に適当間隔（略等間隔）おきに後方向きに配設され、各シールドジャッキ３のジャッキ本体の後部がリングウェブ３０に貫通状に固定されている。複数のシールドジャッキ３はエレクタ装置８で組付けられたセグメントＳを後方へ押す反力により推進力を発生する。   The rear cylinder 12 is formed so that the longitudinal length thereof is about ½ of the vertical length. On the inner surface of the rear cylinder 12, a ring web 30 is fixed to the front end portion, and a tail seal 31 is attached to the rear end portion. Is provided. The plurality of shield jacks 3 are disposed rearwardly at appropriate intervals (substantially equal intervals) in the circumferential direction along the inner surface of the rear barrel portion of the front barrel 11 and the front end portion of the rear barrel 12. The rear portion of the jack body of each shield jack 3 is fixed to the ring web 30 in a penetrating manner. The plurality of shield jacks 3 generate a propulsive force by a reaction force that pushes the segment S assembled by the erector device 8 backward.

複数の中折れジャッキ４は、前胴１１の後端部分と後胴１２の前端部（中折れ部１３）とに亙って、その内面に沿って周方向に適当間隔（略等間隔）おきに、複数のシールドジャッキ３と干渉しないように前方向向きに配設され、各中折れジャッキ４の前端部が、前胴１１に固着されたブラケット３２に回動可能に連結され、各中折れジャッキ４の後端部が、後胴１２に固着されたブラケット３３に回動可能に連結されている。   The plurality of middle-folded jacks 4 are spaced at appropriate intervals (substantially equidistant) in the circumferential direction along the inner surface of the front barrel 11 and the front end of the rear barrel 12 (the middle folded portion 13). In addition, it is arranged in the forward direction so as not to interfere with the plurality of shield jacks 3, and the front end portion of each middle folding jack 4 is rotatably connected to a bracket 32 fixed to the front body 11, and each middle folding A rear end portion of the jack 4 is rotatably connected to a bracket 33 fixed to the rear trunk 12.

次に、掘削装置５について詳細に説明する。
図１〜図５に示すように、掘削装置５は、掘進機本体２の前端側部分に第１軸心Ａ１の回りに回転可能に支持された第１回転部材に相当する回転ドラム４０と、回転ドラム４０を回転駆動する第１回転駆動機構４５と、回転ドラム４０に第２軸心Ａ２の回りに回転可能に支持された第２回転部材に相当するカッター支持フレーム５０と、カッター支持フレーム５０を回転ドラム４０に対して回転駆動する第２回転駆動機構５５と、カッター支持フレーム５０に異なる１対の第３軸心Ａ３の回りに夫々回転可能に支持され表面に複数のカッタービット６１を装備した１対の回転型カッター６０と、１対の回転型カッター６０をカッター支持フレーム５０に対して夫々回転駆動する１対の第３回転駆動機構６５と、回転ドラム４０に第４軸心Ａ４の回りに回転可能に支持され表面に複数のカッタービット７１を装備した回転型補助カッター７０と、回転型補助カッター７０を回転ドラム４０に対して回転駆動する第４回転駆動機構７５と、回転ドラム４０に異なる１対の第５軸心Ａ５の回りに夫々回転可能に支持された１対の攪拌羽根８０と、１対の攪拌羽根８０を回転ドラム４０に対して夫々回転駆動する１対の攪拌羽根回転駆動手段に相当する第５回転駆動機構８５と、第１〜第５回転駆動機構４５，５５，６５，７５，８５を駆動制御する油圧回路を含む駆動制御ユニット９０と、第１〜第５回転駆動機構４５，５５，６５，７５，８５を操作する為の操作盤９５を備えている。 Next, the excavator 5 will be described in detail.
As shown in FIGS. 1 to 5, the excavator 5 includes a rotary drum 40 corresponding to a first rotating member that is supported on the front end side portion of the excavator main body 2 so as to be rotatable around the first axis A1; A first rotation drive mechanism 45 for rotating the rotary drum 40; a cutter support frame 50 corresponding to a second rotary member rotatably supported around the second axis A2 by the rotary drum 40; and a cutter support frame 50 And a plurality of cutter bits 61 on the surface, which are supported by the cutter support frame 50 so as to be rotatable around a different pair of third axes A3. The pair of rotary cutters 60, the pair of third rotary drive mechanisms 65 for rotating the pair of rotary cutters 60 with respect to the cutter support frame 50, and the fourth axis A4 on the rotary drum 40. A rotary auxiliary cutter 70 that is supported so as to be rotatable around and has a plurality of cutter bits 71 on its surface, a fourth rotary drive mechanism 75 that drives the rotary auxiliary cutter 70 to rotate with respect to the rotary drum 40, and the rotary drum 40 A pair of stirring blades 80 rotatably supported around a pair of different fifth axes A5 and a pair of stirring blades that respectively rotate and drive the pair of stirring blades 80 relative to the rotary drum 40. A fifth rotation drive mechanism 85 corresponding to the rotation drive means, a drive control unit 90 including a hydraulic circuit for driving and controlling the first to fifth rotation drive mechanisms 45, 55, 65, 75, 85; An operation panel 95 for operating the rotation drive mechanisms 45, 55, 65, 75, 85 is provided.

第１軸心Ａ１は掘進機本体２の中心軸Ａｃと一致し（平行で）、第２軸心Ａ２は第１軸心Ａ１と平行で且つ第１軸心Ａ１から離隔した位置にあり、第３軸心Ａ３は第２軸心Ａ２と平行で且つ第２軸心Ａ２から離隔した位置にあり、第４軸心Ａ４は第１軸心Ａ１と平行で且つ第１，第２軸心Ａ１，Ａ２から離隔した位置にあり、第５軸心Ａ５は第１軸心Ａ１と平行で且つ第１，第２，第４軸心Ａ１，Ａ２，Ａ４から離隔した位置にあり、第１〜第５回転駆動機構４５，５５，６５，７５，８５は、回転ドラム４０、カッター支持フレーム５０、回転型カッター６０、回転型補助カッター７０、攪拌羽根８０を夫々独立に回転駆動するように構成されている。   The first axis A1 coincides with (is parallel to) the central axis Ac of the excavator body 2, and the second axis A2 is parallel to the first axis A1 and spaced from the first axis A1, The triaxial center A3 is parallel to the second axial center A2 and spaced from the second axial center A2, and the fourth axial center A4 is parallel to the first axial center A1 and the first and second axial centers A1, A1. The fifth axial center A5 is parallel to the first axial center A1 and is spaced apart from the first, second, and fourth axial centers A1, A2, A4. The rotation drive mechanisms 45, 55, 65, 75, and 85 are configured to independently rotate and drive the rotary drum 40, the cutter support frame 50, the rotary cutter 60, the rotary auxiliary cutter 70, and the stirring blade 80, respectively. .

例えば、第２軸心Ａ２は第１軸心Ａ１から回転ドラム４０の半径の約３／４の距離離隔した位置にあり、１対の第３軸心Ａ３は第２軸心Ａ２に対して対称位置で夫々第２軸心Ａ２から回転ドラム４０の半径の約１／２の距離離隔した位置にあり、第４軸心Ａ４は第１軸心Ａ１に対して第２軸心Ａ２と対称位置で第１軸心Ａ１から回転ドラム４０の半径の約３／４の距離離隔した位置にあり、１対の第５軸心Ａ５は夫々第１軸心Ａ１を中心として第４軸心Ａ４を周方向両側へ約４５度移動させた位置にある。   For example, the second axis A2 is located at a distance of about ¾ of the radius of the rotary drum 40 from the first axis A1, and the pair of third axes A3 are symmetrical with respect to the second axis A2. The fourth axial center A4 is symmetrical to the second axial center A2 with respect to the first axial center A1. The pair of fifth axes A5 is located at a distance of about 3/4 of the radius of the rotary drum 40 from the first axis A1, and the pair of fifth axes A5 are arranged around the first axis A1 in the circumferential direction. It is in a position moved about 45 degrees to both sides.

前述のように、回転ドラム４０は隔壁１６の一部である可動隔壁１８を構成する板部材４１を前面に有する。回転ドラム４０は板部材４１と外筒４２と複数のリブを有し、この外筒４２が環状部材２０の円筒部２１に内嵌されて回転可能に支持され、これら円筒部２１と外筒４２の間に環状シール部材４３が装着され、外筒４２の後端部にリングギヤ４４が固定的に設けられている。第１回転駆動機構４５は、掘進機本体２に取付けられた複数（例えば、８つ）の第１アクチュエータに相当する第１油圧モータ４６を有する。複数の第１油圧モータ４６は、環状部材２０の後端部分に設けられたリング状のモータ取付部４７に、周方向に適当間隔おきに前向きに装着され、これらの出力ギヤがリングギヤ４４に噛合している。   As described above, the rotary drum 40 has the plate member 41 constituting the movable partition wall 18 which is a part of the partition wall 16 on the front surface. The rotating drum 40 has a plate member 41, an outer cylinder 42, and a plurality of ribs. The outer cylinder 42 is fitted into the cylindrical portion 21 of the annular member 20 and is rotatably supported. The cylindrical portion 21 and the outer cylinder 42 are supported. An annular seal member 43 is mounted between them, and a ring gear 44 is fixedly provided at the rear end portion of the outer cylinder 42. The first rotation drive mechanism 45 includes first hydraulic motors 46 corresponding to a plurality of (for example, eight) first actuators attached to the excavator main body 2. The plurality of first hydraulic motors 46 are forwardly mounted at appropriate intervals in the circumferential direction on a ring-shaped motor mounting portion 47 provided at the rear end portion of the annular member 20, and these output gears mesh with the ring gear 44. is doing.

カッター支持フレーム５０は、回転ドラム４０の外周部付近に回転可能に支持され、カッター支持フレーム５０と１対の回転型カッター６０は、正面視にて１対の回転型カッター６０が回転ドラム４０の外周よりも外側へ移動可能に構成されている。カッター支持フレーム５０は、回転ドラム４０の前側のチャンバー１９内に配設されたフレーム本体５１と、フレーム本体５１の後端部の長さ方向中央部に連結されて後方へ突出する筒状部５２とを有する。フレーム本体５１は、その長さが回転ドラム４０の直径の約４／５の長さに形成され、その前後厚さがチャンバー１９の前後長よりも少し小さい箱形に形成され、このフレーム本体５１の長さ方向両側部分に１対の回転型カッター６０が装着されている。   The cutter support frame 50 is rotatably supported in the vicinity of the outer peripheral portion of the rotary drum 40, and the pair of rotary cutters 60 and the cutter support frame 50 are paired with the rotary cutter 60 in the front view. It is configured to be movable outward from the outer periphery. The cutter support frame 50 includes a frame main body 51 disposed in the chamber 19 on the front side of the rotary drum 40 and a cylindrical portion 52 that is connected to the central portion in the length direction of the rear end portion of the frame main body 51 and protrudes rearward. And have. The frame main body 51 is formed in a box shape whose length is about 4/5 of the diameter of the rotating drum 40, and its front and rear thickness is slightly smaller than the front and rear length of the chamber 19. A pair of rotary cutters 60 are attached to both sides in the longitudinal direction.

回転ドラム４０には、外周近傍部に円筒受部４０ａが内嵌状に固定され、この円筒受部４０ａにカッター支持フレーム５０の筒状部５２が内嵌されて回転可能に支持され、これら円筒受部４０ａと筒状部５２の間に環状シール部材５３が装着され、筒状部５２の後端部にリングギヤ５４が固定的に設けられている。第２回転駆動機構５５は、回転ドラム４０に取付けられた複数（例えば、８つ）の第２アクチュエータに相当する第２油圧モータ５６を有する。複数の第２油圧モータ５６は、所定のモータ取付部に、周方向に適当間隔おきに前向きに装着され、これらの出力ギヤがリングギヤ５４に噛合している。   A cylindrical receiving portion 40a is fixed to the rotating drum 40 in the vicinity of the outer periphery, and the cylindrical portion 52 of the cutter support frame 50 is fitted into the cylindrical receiving portion 40a so as to be rotatably supported. An annular seal member 53 is mounted between the receiving portion 40 a and the tubular portion 52, and a ring gear 54 is fixedly provided at the rear end portion of the tubular portion 52. The second rotation drive mechanism 55 includes second hydraulic motors 56 corresponding to a plurality of (for example, eight) second actuators attached to the rotary drum 40. The plurality of second hydraulic motors 56 are mounted on a predetermined motor mounting portion in the circumferential direction so as to face forward at appropriate intervals, and these output gears mesh with the ring gear 54.

１対の回転型カッター６０は、夫々、円形の前面６２ａとこの前面６２ａの外周に連なる環状テーパ面６２ｂとこの環状テーパ面６２ｂの後端に連なる円筒状外周面６２ｃとを有するカッターフレーム６２を有し、この前面６２ａと環状テーパ面６２ｂと円筒状外周面６２ｃに複数のカッタービット６１が装備され、これらカッタービット６１はカッターフレーム６２の内側から着脱可能になっている。フレーム本体５１の長さ方向両側部分に１対のカッター取付部５１ａが設けられ、各回転型カッター６０のカッターフレーム６２の後端部分が各カッター取付部５１ａに前側から内嵌されて回転可能に支持され、これらカッター取付部５１ａとカッターフレーム６２の間に環状シール部材６３が装着され、カッターフレーム６２の後端部にリングギヤ６４が固定的に設けられている。   The pair of rotary cutters 60 includes a cutter frame 62 having a circular front surface 62a, an annular tapered surface 62b continuous with the outer periphery of the front surface 62a, and a cylindrical outer peripheral surface 62c continuous with the rear end of the annular tapered surface 62b. A plurality of cutter bits 61 are provided on the front surface 62 a, the annular tapered surface 62 b, and the cylindrical outer peripheral surface 62 c, and the cutter bits 61 are detachable from the inside of the cutter frame 62. A pair of cutter mounting portions 51a is provided on both sides in the length direction of the frame body 51, and the rear end portion of the cutter frame 62 of each rotary cutter 60 is fitted into each cutter mounting portion 51a from the front side so as to be rotatable. An annular seal member 63 is mounted between the cutter attachment portion 51 a and the cutter frame 62, and a ring gear 64 is fixedly provided at the rear end portion of the cutter frame 62.

１対の第３回転駆動機構６５は１対のカッター取付部５１ａに夫々取付けられた複数（例えば、１対）の第３アクチュエータに相当する第３油圧モータ６６を有する。各第３回転駆動機構６５において、複数の第３油圧モータ６６は、カッター取付部５１ａの内部に前向きに装着され、これらの出力ギヤが回転型カッター６０のリングギヤ６４に噛合している。ここで、カッターフレーム６２の内部に、隔壁１６側からカッター支持フレーム５０を通って作業者が入り込めてカッタービット６１を交換可能な作業スペースが形成されている。カッター支持フレーム５０の筒状部５２の後端部に、カッター支持フレーム５０に入るハッチ５０ａが形成されている。尚、カッターフレーム６２には後側へ突出する攪拌羽根も装備されている。   The pair of third rotation drive mechanisms 65 includes third hydraulic motors 66 corresponding to a plurality of (for example, one pair) third actuators attached to the pair of cutter attachment portions 51a. In each third rotation drive mechanism 65, the plurality of third hydraulic motors 66 are mounted forward in the cutter attachment portion 51 a, and these output gears mesh with the ring gear 64 of the rotary cutter 60. Here, a working space is formed inside the cutter frame 62 where an operator can enter the cutter frame 61 from the partition 16 side through the cutter support frame 50 and the cutter bit 61 can be replaced. A hatch 50 a that enters the cutter support frame 50 is formed at the rear end of the cylindrical portion 52 of the cutter support frame 50. The cutter frame 62 is also equipped with a stirring blade that protrudes rearward.

回転型補助カッター７０は、回転型カッター６０と同様の構造であり、円形の前面７２ａとこの前面７２ａの外周に連なる環状テーパ面７２ｂとこの環状テーパ面７２ｂの後端に連なる円筒状外周面７２ｃとを有するカッターフレーム７２を有し、この前面７２ａと環状テーパ面７２ｂと円筒状外周面７２ｃに複数のカッタービット７１が装備され、これらカッタービット７１はカッターフレーム７２の内側から着脱可能になっている。回転ドラム４０にはチャンバー１９内に突出する筒状のカッター取付部５０Ａが固定され、回転型補助カッター７０のカッターフレーム７２の後端部分が、カッター取付部５０Ａに前側から内嵌されて回転可能に支持され、これらカッター取付部５０Ａとカッターフレーム７２の間に環状シール部材７３が装着され、カッターフレーム７２の後端部にリングギヤ７４が固定的に設けられている。   The rotary auxiliary cutter 70 has the same structure as the rotary cutter 60, and has a circular front surface 72a, an annular tapered surface 72b continuous to the outer periphery of the front surface 72a, and a cylindrical outer peripheral surface 72c continuous to the rear end of the annular tapered surface 72b. A plurality of cutter bits 71 are provided on the front surface 72a, the annular tapered surface 72b, and the cylindrical outer peripheral surface 72c, and the cutter bits 71 are detachable from the inside of the cutter frame 72. Yes. A cylindrical cutter mounting portion 50A protruding into the chamber 19 is fixed to the rotating drum 40, and the rear end portion of the cutter frame 72 of the rotary auxiliary cutter 70 is fitted into the cutter mounting portion 50A from the front side and is rotatable. An annular seal member 73 is mounted between the cutter attachment portion 50A and the cutter frame 72, and a ring gear 74 is fixedly provided at the rear end portion of the cutter frame 72.

第４回転駆動機構７５は、カッター取付部５０Ａに取付けられた複数（例えば、１対）の第４油圧モータ７６を有する。複数の第４油圧モータ７６は、カッター取付部５０Ａの内部に前向きに装着され、これらの出力ギヤがリングギヤ７４に噛合している。ここで、カッターフレーム７２の内部に、隔壁１６側からカッター取付部５０Ａの内部を通って作業者が入り込めてカッタービット７１を交換可能な作業スペースが形成されている。尚、カッターフレーム７２には後側へ突出する攪拌羽根も装備されている。   The fourth rotation drive mechanism 75 includes a plurality (for example, a pair) of fourth hydraulic motors 76 attached to the cutter attachment portion 50A. The plurality of fourth hydraulic motors 76 are mounted forward inside the cutter attachment portion 50 </ b> A, and these output gears mesh with the ring gear 74. Here, a working space is formed in the cutter frame 72 so that an operator can enter the cutter mounting portion 50A from the partition wall 16 side and exchange the cutter bit 71. The cutter frame 72 is also equipped with a stirring blade that protrudes rearward.

１対の攪拌羽根８０はチャンバー１９の内部に配置され、１対の第５回転駆動機構８５は、隔壁１６の後側において回転ドラム４０に夫々取付けられた複数（例えば、３つ）の第５油圧モータ８５を有する。   The pair of stirring blades 80 is disposed inside the chamber 19, and the pair of fifth rotation drive mechanisms 85 are a plurality of (for example, three) fifth rollers respectively attached to the rotary drum 40 on the rear side of the partition wall 16. A hydraulic motor 85 is included.

ところで、回転ドラム４０の中心部にロータリージョイント９１が装着され、第２〜５の回転駆動機構５５，６５，７５，８５の第２〜第５油圧モータ５６，６６，７６，８６へは、駆動制御ユニット９０からロータリージョイント９１を介して油圧が供給される。ここで、本実施例の場合、カッター支持フレーム５０は、回転ドラム４０に対して所定の基準位相角位置から１８０度以上回転しないため、第３回転駆動機構７５の第３油圧モータ７６への油圧の供給は、ロータリージョイント９１から油圧ホースにより行われる。但し、カッター支持フレーム５０の中心部にロータリージョイントを装着し、このロータリージョイントを介して第３油圧モータ７６に油圧を供給してもよい。   Incidentally, a rotary joint 91 is mounted at the center of the rotary drum 40, and the second to fifth hydraulic motors 56, 66, 76, 86 of the second to fifth rotary drive mechanisms 55, 65, 75, 85 are driven. Hydraulic pressure is supplied from the control unit 90 via the rotary joint 91. Here, in the case of the present embodiment, the cutter support frame 50 does not rotate 180 degrees or more from the predetermined reference phase angle position with respect to the rotary drum 40, so that the hydraulic pressure to the third hydraulic motor 76 of the third rotation drive mechanism 75 is increased. Is supplied from the rotary joint 91 by a hydraulic hose. However, a rotary joint may be attached to the center portion of the cutter support frame 50, and the hydraulic pressure may be supplied to the third hydraulic motor 76 via the rotary joint.

また、加泥材供給ユニット（図示略）が設けられており、この加泥材供給ユニットから加泥材がロータリージョイント９１に供給される。１対の回転型カッター６０に加泥材注入口６０ａが夫々形成され、回転型補助カッター７０に加泥材注入口７０ａが形成され、これら加泥材注入口６０ａ，７０ａにロータリージョイント９１から加泥材ホース（図示略）により加泥材が供給される。１対の攪拌羽根８０に加泥材注入口８０ａが夫々形成され、これら攪拌羽根８０の中心部にロータリージョイント９２が装着され、ロータリージョイント９１から加泥材ホース（図示略）によりロータリージョイント９２に加泥材が供給され、このロータリージョイント９２から加泥材注入口８０ａに加泥材が供給される。   Further, a mud material supply unit (not shown) is provided, and the mud material is supplied to the rotary joint 91 from this mud material supply unit. A pair of rotary cutters 60 is provided with a mud additive inlet 60a, a rotary auxiliary cutter 70 is provided with a mud additive inlet 70a, and a rotary joint 91 is added to the mud additive inlets 60a and 70a. A mud material is supplied by a mud material hose (not shown). A pair of stirring blades 80 is formed with a mud filler inlet 80a, and a rotary joint 92 is attached to the center of the stirring blades 80. The rotary joint 91 is connected to the rotary joint 92 by a mud material hose (not shown). The mud material is supplied, and the mud material is supplied from the rotary joint 92 to the mud material inlet 80a.

尚、掘削土排出装置６、１対のエレクタ装置７、１対のセグメント保持装置８、裏込注入装置９については、既存の装置であるので詳細な説明を省略する。尚、トンネルＴの幅方向中央部に、トンネルＴの内面上部に組付けたセグメントＳを支持する中柱Ｓａが組付けられるが、この中柱Ｓａの組付けは１対のエレクタ装置７の一方で行われる。   Since the excavated soil discharging device 6, the pair of erector devices 7, the pair of segment holding devices 8, and the back-injecting device 9 are existing devices, detailed description thereof is omitted. An intermediate pillar Sa that supports the segment S attached to the upper part of the inner surface of the tunnel T is attached to the center in the width direction of the tunnel T. The intermediate pillar Sa is attached to one of the pair of erector devices 7. Done in

次に、シールド掘進機１の作用について説明する。
シールド掘進機１では、掘進機本体２が複数のシールドジャッキ３により推進され、掘削装置５により掘進機本体２の前端側の地山が掘削されて、掘削土はチャンバー１９に回収され掘削土排出装置６により外部へ排出される。こうしてトンネルＴが掘削されると共に、順次、１対のエレクタ装置７により複数のセグメントＳがリング状に組付けられ、そのセグメントＳが１対のセグメント保持装置８で保持された状態で、一方のエレクタ装置７により中柱Ｓａが組付けられる。 Next, the operation of the shield machine 1 will be described.
In the shield machine 1, the machine 2 is propelled by a plurality of shield jacks 3, the ground on the front end side of the machine 2 is excavated by the excavator 5, and the excavated soil is collected in the chamber 19 and discharged. It is discharged to the outside by the device 6. In this way, the tunnel T is excavated, and a plurality of segments S are sequentially assembled in a ring shape by a pair of erector devices 7, and the segments S are held by a pair of segment holding devices 8. The middle pole Sa is assembled by the erector device 7.

掘削装置５では、第１回転駆動機構４５により回転ドラム４０が第１軸心Ａ１の回りに回転駆動されて、カッター支持フレーム５０と１対の回転型カッター６０と回転型補助カッター７０も一体的に第１軸心Ａ１の回りに回転し、第２回転駆動機構５５によりカッター支持フレーム５０が回転ドラム４０に対して第２軸心Ａ２の回りに回転駆動されて、１対の回転型カッター７０も一体的に第２軸心Ａ２の回りに回転し、１対の第３回転駆動機構６５により１対の回転型カッター６０がカッター支持フレーム５０に対して夫々異なる１対の第３軸心Ａ３の回りに回転駆動され、第４回転駆動機構７５により回転型補助カッター７０が回転ドラム４０に対して第４軸心Ａ４の回りに回転駆動され、１対の第５回転駆動機構８５により１対の攪拌羽根８０が回転ドラム４０に対して夫々回転駆動される。   In the excavator 5, the rotary drum 40 is rotated around the first axis A1 by the first rotation drive mechanism 45, and the cutter support frame 50, the pair of rotary cutters 60, and the rotary auxiliary cutter 70 are also integrated. The cutter support frame 50 is rotated about the second axis A2 with respect to the rotary drum 40 by the second rotation driving mechanism 55, and the pair of rotary cutters 70 is rotated. Also rotate around the second axis A2, and the pair of third rotary drive mechanisms 65 makes the pair of rotary cutters 60 different from the cutter support frame 50, respectively. The rotary auxiliary cutter 70 is rotationally driven around the fourth axis A4 with respect to the rotary drum 40 by the fourth rotational drive mechanism 75, and is paired by the pair of fifth rotational drive mechanisms 85. Stirring Roots 80 are driven respectively rotate with respect to the rotary drum 40.

第１〜第５回転駆動機構４５，５５，６５，７５，８５は、回転ドラム４０、カッター支持フレーム５０、回転型カッター６０、回転型補助カッター７０、攪拌羽根８０を夫々独立に駆動するが、胴体２と同形の矩形断面のトンネルＴを掘削するために、駆動制御ユニット９０による第１〜第５回転駆動機構４５，５５，６５，７５，８５の制御について、図６−１〜図６−１６に基づいて詳細に説明する。尚、正面視における左方を左方とし、１対の回転型カッター６０のうち図６−１における右側をNo.1カッター６０、左側をNo.2カッター６０、回転型補助カッター７０をNo.3カッター７０として説明する。   The first to fifth rotation drive mechanisms 45, 55, 65, 75, 85 independently drive the rotary drum 40, the cutter support frame 50, the rotary cutter 60, the rotary auxiliary cutter 70, and the stirring blade 80, respectively. Regarding the control of the first to fifth rotary drive mechanisms 45, 55, 65, 75, and 85 by the drive control unit 90 in order to excavate the tunnel T having the same rectangular shape as that of the fuselage 2, FIGS. 16 will be described in detail. The left side in the front view is the left side, and among the pair of rotary cutters 60, the right side in FIG. 6-1 is the No. 1 cutter 60, the left side is the No. 2 cutter 60, and the rotary auxiliary cutter 70 is No. This will be described as 3 cutter 70.

先ず、掘削装置５が図６−１に示す状態において、掘進機本体２に対して第１軸心Ａ１を中心とする回転ドラム４０のドラム回転角θ（回転位相角θ）を基準位相角０度として、この基準位相角から正面視にて回転ドラム４０の時計回り方向のドラム回転角θを＋側とし、また、回転ドラム４０に対して第２軸心Ａ２を中心とするカッター支持フレーム５０のフレーム揺動角α（回転位相角α）を基準位相角０度として、この基準位相角から正面視にてカッター支持フレーム５０の反時計回り方向のフレーム揺動角αを＋側とする。   First, when the excavator 5 is in the state shown in FIG. 6A, the drum rotation angle θ (rotation phase angle θ) of the rotary drum 40 centered on the first axis A1 with respect to the excavator main body 2 is set to the reference phase angle 0. The cutter support frame 50 centered on the second axis A2 with respect to the rotary drum 40, with the drum rotation angle θ in the clockwise direction of the rotary drum 40 as viewed from the front from this reference phase angle. The frame rocking angle α (rotational phase angle α) is a reference phase angle of 0 degree, and the frame rocking angle α in the counterclockwise direction of the cutter support frame 50 from the reference phase angle is set to the + side.

ここで、図６−１の状態のとき、第２軸心Ａは上限位置に位置し、カッター支持フレーム５０は水平になり、１対の第３軸心Ａ３の上下方向位置が一致して、No.1，No.2カッター６０の上端部と胴体２の上端部の上下方向位置が一致し、また、第４軸心Ａ４は下限位置に位置し、No.3カッター７０の下端部と胴体２の下端部の上下方向位置が一致する。   Here, in the state of FIG. 6A, the second axis A is located at the upper limit position, the cutter support frame 50 is horizontal, and the vertical position of the pair of third axes A3 coincides. The upper and lower positions of the upper ends of the No. 1 and No. 2 cutters 60 and the upper end of the fuselage 2 coincide, and the fourth axis A4 is located at the lower limit position. The lower end of the No. 3 cutter 70 and the fuselage The vertical position of the lower end of 2 matches.

さて、掘削の際、第３〜第５回転駆動機構６５，７５，８５では、No.1，No.2カッター６０、No.3カッター７０、攪拌羽根８０を常時正面視にて時計回り方向へ回転駆動するが、第１，第２回転駆動機構４５，５５では、掘削するトンネルＴの断面形状に応じて回転ドラム４０の基準位相角からのドラム回転角θに対応付けてカッター支持フレーム５０のフレーム揺動角αを制御するように、第１，第２回転駆動機構４５，５５を制御する。   Now, during excavation, in the third to fifth rotation drive mechanisms 65, 75, 85, the No. 1, No. 2 cutter 60, No. 3 cutter 70, and the stirring blade 80 are always clockwise when viewed from the front. In the first and second rotational drive mechanisms 45 and 55, the cutter support frame 50 of the cutter support frame 50 is associated with the drum rotation angle θ from the reference phase angle of the rotary drum 40 according to the cross-sectional shape of the tunnel T to be excavated. The first and second rotation drive mechanisms 45 and 55 are controlled so as to control the frame swing angle α.

具体的に説明すると、先ず、図６−１〜図６−４に示すように、No.1カッター６０により、トンネルＴの右上約１／４の周部分の内面を形成するように、回転ドラム４０がドラム回転角θ＝０→３０→６０→７３．７度に回転し、その間に、カッター支持フレーム５０がフレーム揺動角α＝±０→＋３６．４→＋７４．３→＋５２．８度に揺動する。図６−４の状態のときに、No.1カッター６０がトンネルＴの右側面の上下方向中央部に位置する。次に、図６−４〜図６−６に示すように、No.2カッター６０をトンネルＴの右側面の上下方向中央部に位置させるように、回転ドラム４０がドラム回転角θ＝７３．７→９０→１０６．３度に回転し、その間に、カッター支持フレーム５０がフレーム揺動角α＝＋５２．８→±０→−５２．８度に揺動する。   More specifically, first, as shown in FIGS. 6-1 to 6-4, the rotating drum is formed so that the inner surface of the circumferential portion of the upper right about 1/4 of the tunnel T is formed by the No. 1 cutter 60. 40 rotates at a drum rotation angle θ = 0 → 30 → 60 → 73.7 degrees, and during that time, the cutter support frame 50 has a frame swing angle α = ± 0 → + 36.4 → + 74.3 → + 52.8 degrees. Rocks. In the state of FIG. 6-4, the No. 1 cutter 60 is located at the center in the vertical direction on the right side surface of the tunnel T. Next, as shown in FIGS. 6-4 to 6-6, the rotary drum 40 has a drum rotation angle θ = 73... So that the No. 2 cutter 60 is positioned in the vertical center of the right side surface of the tunnel T. The cutter support frame 50 swings from 7 → 90 → 106.3 degrees, and during that time, the cutter support frame 50 swings at a frame swing angle α = + 52.8 → ± 0 → −52.8 degrees.

次に、図６−６〜図６−９に示すように、No. ２カッター６０により、トンネルＴの右下約１／４の周部分の内面を形成するように、回転ドラム４０がドラム回転角θ＝１０６．３→１２０→１５０→１８０度に回転し、その間に、カッター支持フレーム５０がフレーム揺動角α＝−５２．８→−７４．３→−３６．４→±０度に揺動する。図６−９の状態のときに、第２軸心Ａは下限位置に位置し、カッター支持フレーム５０は水平になり、１対の第３軸心Ａ３の上下方向位置が一致して、No.1，No.2カッター６０の下端部と胴体２の下端部の上下方向位置が一致し、また、第４軸心Ａ４は上限位置に位置し、No.3カッター７０の上端部と胴体２の上端部の上下方向位置が一致する。   Next, as shown in FIGS. 6-6 to 6-9, the rotating drum 40 is rotated by the No. 2 cutter 60 so that the inner surface of the circumferential portion of the lower right side of the tunnel T is about 1/4. The angle θ = 106.3 → 120 → 150 → 180 degrees, and during that time, the cutter support frame 50 is changed to a frame swing angle α = −52.8 → −74.3 → −36.4 → ± 0 degrees. Swing. 6-9, the second axis A is positioned at the lower limit position, the cutter support frame 50 is horizontal, and the vertical position of the pair of third axes A3 coincides with each other. 1, the vertical position of the lower end of the No. 2 cutter 60 and the lower end of the fuselage 2 coincide, and the fourth axis A4 is located at the upper limit position, and the upper end of the No. 3 cutter 70 and the fuselage 2 The vertical position of the upper end matches.

次に、図６−９〜図６−１２に示すように、No.1カッター６０により、トンネルＴの左下約１／４の周部分の内面を形成するように、回転ドラム４０がドラム回転角θ＝１８０→２１０→２４０→２５３．７度に回転し、その間に、カッター支持フレーム５０がフレーム揺動角α＝±０→＋３６．４→＋７４．３→＋５２．８度に揺動する。図６−１２の状態のときに、No.1カッター６０がトンネルＴの左側面の上下方向中央部に位置する。次に、図６−１２〜図６−１４に示すように、No.2カッター６０をトンネルＴの左側面の上下方向中央部に位置させるように、回転ドラム４０がドラム回転角θ＝２５３．７→２７０→２８６．３度に回転し、その間に、カッター支持フレーム５０がフレーム揺動角α＝＋５２．８→±０→−５２．８度に揺動する。   Next, as shown in FIGS. 6-9 to 6-12, the rotary drum 40 is rotated at the drum rotation angle so that the inner surface of the lower left about 1/4 of the tunnel T is formed by the No. 1 cutter 60. θ = 180 → 210 → 240 → 253.7 degrees, while the cutter support frame 50 swings at a frame swing angle α = ± 0 → + 36.4 → + 74.3 → + 52.8 degrees. In the state of FIGS. 6-12, the No. 1 cutter 60 is located in the vertical center of the left side surface of the tunnel T. Next, as shown in FIGS. 6-12 to 6-14, the rotary drum 40 has a drum rotation angle θ = 253.m so that the No. 2 cutter 60 is positioned at the center in the vertical direction on the left side surface of the tunnel T. 7 → 270 → 286.3 degrees, and the cutter support frame 50 swings at a frame swing angle α = + 52.8 → ± 0 → −52.8 degrees.

次に、図６−１４〜図６−１６、図６−１に示すように、No. ２カッター６０により、トンネルＴの左上約１／４の周部分の内面を形成するように、回転ドラム４０がドラム回転角θ＝２８６．３→３００→３３０→３６０（０）度に回転し、その間に、カッター支持フレーム５０がフレーム揺動角α＝−５２．８→−７４．３→−３６．４→±０度に揺動して図６−１の状態になる。以上のように、回転ドラム４０が３６０度回転した場合に、No.1カッター６０による掘削範囲は図７−１に斜線で示す範囲となり、No.2カッター６０による掘削範囲は図７−２に斜線で示す範囲となり、No.3カッター７０による掘削範囲は図７−３に斜線で示す範囲となり、これらのトータルの掘削範囲は、図７−１〜図７−３を重ね合わせた図８に斜線で示す範囲となる。   Next, as shown in FIG. 6-14 to FIG. 6-16 and FIG. 6-1, the rotating drum is formed so that the inner surface of the peripheral portion of the upper left about 1/4 of the tunnel T is formed by the No. 2 cutter 60. 40 rotates at a drum rotation angle θ = 286.3 → 300 → 330 → 360 (0) degrees, and during that time, the cutter support frame 50 has a frame swing angle α = −52.8 → −74.3 → −36. .4 → Oscillates to ± 0 degrees, resulting in the state shown in FIG. As described above, when the rotary drum 40 is rotated 360 degrees, the excavation range by the No. 1 cutter 60 becomes a range indicated by hatching in FIG. 7-1 and the excavation range by the No. 2 cutter 60 is shown in FIG. The range of digging by the No. 3 cutter 70 is the range shown by diagonal lines in FIG. 7-3, and the total excavation range is shown in FIG. 8 in which FIGS. 7-1 to 7-3 are superimposed. The range is indicated by diagonal lines.

以上説明したシールド掘進機１によれば次の効果を奏する。
種々の自由な断面形状のトンネルを掘削することが可能になり、所定の断面形状のトンネル（例えば、矩形断面のトンネルＴ）を掘削する場合、その断面形状に応じて回転ドラム４０の基準位相角からの回転位相角（ドラム回転角θ）に対応付けてカッター支持フレーム５０の回転角（フレーム揺動角α）を制御するように、第１，第２回転駆動機構４５，５５を駆動制御することで実現できる。 The shield machine 1 described above has the following effects.
It becomes possible to excavate tunnels having various free cross-sectional shapes. When excavating a tunnel having a predetermined cross-sectional shape (for example, a tunnel T having a rectangular cross-section), the reference phase angle of the rotary drum 40 is determined according to the cross-sectional shape. The first and second rotation drive mechanisms 45 and 55 are driven and controlled so as to control the rotation angle (frame swing angle α) of the cutter support frame 50 in association with the rotation phase angle (drum rotation angle θ) from This can be achieved.

つまり、第１，第２回転駆動機構４５，５５の制御を変更することで、機械的な構造を変更することなく、掘削するトンネルの断面形状の変更を簡単に行うことができ、掘削途中のトンネルの断面形状を変更することも可能であり、汎用性が極めて高くなる。トンネルのカーブ部分を掘削する場合等、トンネルを少し拡大するために地山を余掘りする必要がある場合でも、その余掘りを回転型カッター６０で行うことができ、既存のコピーカッターを省略することが可能になる。   That is, by changing the control of the first and second rotary drive mechanisms 45 and 55, the cross-sectional shape of the tunnel to be excavated can be easily changed without changing the mechanical structure, It is also possible to change the cross-sectional shape of the tunnel, and the versatility becomes extremely high. Even when it is necessary to excavate the ground to slightly enlarge the tunnel, such as when excavating a curved portion of the tunnel, the excavation can be performed by the rotary cutter 60, and the existing copy cutter is omitted. It becomes possible.

第１〜第３回転駆動機構４５，５５，６５により回転ドラム４０、カッター支持フレーム５０、回転型カッター６０を独立に回転駆動するため、これら４０，５０，６０を連動連結させる複雑な構造が不要となり、構造を簡単化でき、製作コスト的にも有利になり、更に、実質的に回転型カッター６０を第１軸心Ａ１の回りにも第２軸心Ａ２の回りにも第３軸心Ａ３の回りにも回転させることが可能であり、回転型カッター６０の軌道を能率よく掘削できる軌道に設定することもできるため、掘削能力が非常に高くなり、強度的また耐久性の面で優れたものに構成することができ、依って、あらゆる土質を含む地山を掘削する場合に対応することが可能になる。   Since the rotary drum 40, the cutter support frame 50, and the rotary cutter 60 are independently rotated by the first to third rotary drive mechanisms 45, 55, and 65, a complicated structure that interlocks and connects these 40, 50, and 60 is unnecessary. Thus, the structure can be simplified, the manufacturing cost is advantageous, and the rotary cutter 60 is substantially arranged around the first axis A1 and the second axis A2 as well as the third axis A3. Since the rotary cutter 60 can be set to a track that can be excavated efficiently, the excavation capability is extremely high, and it is excellent in terms of strength and durability. Therefore, it becomes possible to cope with the case of excavating natural ground including any soil.

掘進機本体２は、掘削土を回収可能なチャンバー１９と、そのチャンバー１９の後端を仕切る隔壁１６とを有し、回転ドラム４０は、隔壁１６の一部である可動隔壁１８を構成する板部材４１を有するので、回転ドラム４０の回転方向に対する強度、剛性が非常に高くなり、強度的また耐久性の面で非常に優れたものとなる。   The excavator main body 2 includes a chamber 19 that can collect excavated soil, and a partition wall 16 that partitions the rear end of the chamber 19, and the rotating drum 40 is a plate constituting the movable partition wall 18 that is a part of the partition wall 16. Since the member 41 is provided, the strength and rigidity in the rotating direction of the rotary drum 40 are very high, and the strength and durability are extremely excellent.

第１回転駆動機構４５は、掘進機本体２に取付けられた複数の第１油圧モータ４６を有し、第２回転駆動機構５５は、回転ドラム４０に取付けられた複数の第２油圧モータ５６を有し、第３回転駆動機構６５は、カッター支持フレーム５０に取付けられた複数の第３油圧モータ６６を有するので、回転ドラム４０、カッター支持フレーム５０、回転型カッター６０を夫々独立に確実に回転駆動することができ、第１〜第３回転駆動機構４５，５５，６５の構造も簡単化できる。   The first rotation drive mechanism 45 has a plurality of first hydraulic motors 46 attached to the excavator main body 2, and the second rotation drive mechanism 55 has a plurality of second hydraulic motors 56 attached to the rotary drum 40. The third rotation drive mechanism 65 has a plurality of third hydraulic motors 66 attached to the cutter support frame 50, so that the rotary drum 40, the cutter support frame 50, and the rotary cutter 60 can be rotated independently and reliably. It can drive, and the structure of the 1st-3rd rotation drive mechanisms 45, 55, and 65 can also be simplified.

カッター支持フレーム５０は、回転ドラム４０の外周部付近に回転可能に支持され、カッター支持フレーム５０と回転型カッター６０は、正面視にて回転型カッター６０が回転ドラム４０の外周よりも外側へ移動可能に構成したので、回転ドラム４０よりもサイズが大きな種々の断面形状のトンネルＴを確実に掘削できる。   The cutter support frame 50 is rotatably supported in the vicinity of the outer peripheral portion of the rotary drum 40, and the cutter support frame 50 and the rotary cutter 60 are moved outward from the outer periphery of the rotary drum 40 when viewed from the front. Since it is configured to be possible, the tunnel T having various cross-sectional shapes larger than the rotating drum 40 can be excavated with certainty.

カッター支持フレーム５０に異なる１対の第３軸心Ａ３の回りに夫々回転可能に支持された１対の回転型カッター６０と、これら１対の回転型カッター６０を夫々回転駆動する１対の第３回転駆動機構６５とを備えたので、掘削能力を高めることができる。   A pair of rotary cutters 60 rotatably supported around a pair of different third axes A3 on the cutter support frame 50, and a pair of first cutters that rotationally drive the pair of rotary cutters 60, respectively. Since the three-rotation drive mechanism 65 is provided, excavation capability can be increased.

回転ドラム４０に第１軸心Ａ１と平行で且つこの第１軸心Ａ１と第２軸心Ａ２から離隔した位置にある第４軸心Ａ４の回りに回転可能に支持され表面に複数のカッタービット７１を装備した回転型補助カッター７０と、回転型補助カッター７０を回転駆動する第４回転駆動機構７５とを備えたので、掘削能力を高め、回転型カッター６０で掘削できない部分をこの回転型補助カッター７０で掘削できるように構成できる。   A plurality of cutter bits are supported on the surface of the rotary drum 40 so as to be rotatable around a fourth axis A4 that is parallel to the first axis A1 and spaced apart from the first axis A1 and the second axis A2. Since the rotary auxiliary cutter 70 equipped with 71 and the fourth rotary drive mechanism 75 that rotationally drives the rotary auxiliary cutter 70 are provided, the excavation capability is improved and the portion that cannot be excavated by the rotary cutter 60 is provided with this rotary auxiliary cutter. It can comprise so that it can excavate with the cutter 70. FIG.

チャンバー１９の内部に配置され回転ドラム４０に回転可能に支持された攪拌羽根８０と、攪拌羽根８０を回転駆動する第５回転駆動機構８５とを備えたので、掘削土を攪拌してチャンバー１９から外部へ搬送し易くすることができ、その攪拌羽根８０は第５回転駆動機構８５で自転すると共に、回転ドラム４０と一体的に回転するため、攪拌性能が非常に向上する。   Since the stirring blade 80 disposed inside the chamber 19 and rotatably supported by the rotary drum 40 and the fifth rotation drive mechanism 85 that rotationally drives the stirring blade 80 are provided, the excavated soil is stirred and removed from the chamber 19. The agitating blade 80 can be easily conveyed to the outside, and the agitation blade 80 is rotated by the fifth rotation driving mechanism 85 and is rotated integrally with the rotary drum 40, so that the agitation performance is greatly improved.

実施例２では、図９−１〜図９−３に示すように、実施例１と同様のシールド掘進機１Ａにより、馬蹄形断面のトンネルＴＡを掘削する場合を示している。トンネルＴＡの水平な底面を形成する場合には、実施例１の矩形断面のトンネルＴの水平な底面を形成する場合と同様に、第１，第２回転駆動機構４５，５５を駆動制御し、その他の円弧状の内面を形成する場合には、１対の回転型カッター６０の一方を正面視にて回転ドラム４０の外周よりも外側へ大きく突出させた状態で、回転ドラム４０に対してカッター支持フレーム５０を固定し、つまり、第１軸心Ａ１から前記一方の回転型カッター６０までの距離を固定して、回転ドラム４０を回転させる。従来は、円形断面のトンネルを形成した後、人や車両が通る所定幅の道路をトンネル下端部よりも大きく上側へ離隔した位置に作る必要があり、この作業負荷が非常に大きいが、本実施例では、鞍形断面のトンネルＴＡを掘削できるため、その底面に所定幅の道路を簡単に確実に形成することができる。   In the second embodiment, as shown in FIGS. 9-1 to 9-3, a case where a tunnel TA having a horseshoe cross section is excavated by the shield machine 1A similar to the first embodiment is shown. When forming the horizontal bottom surface of the tunnel TA, similarly to the case of forming the horizontal bottom surface of the tunnel T having the rectangular cross section of the first embodiment, the first and second rotational drive mechanisms 45 and 55 are driven and controlled. When the other arc-shaped inner surface is formed, the cutter is made with respect to the rotary drum 40 in a state in which one of the pair of rotary cutters 60 is protruded outward from the outer periphery of the rotary drum 40 in a front view. The support frame 50 is fixed, that is, the distance from the first axis A1 to the one rotary cutter 60 is fixed, and the rotary drum 40 is rotated. Conventionally, after a tunnel with a circular cross section is formed, it is necessary to create a road with a predetermined width through which people and vehicles pass and be separated from the lower end of the tunnel to the upper side, and this work load is very large. In the example, since the tunnel TA having a bowl-shaped cross section can be excavated, a road having a predetermined width can be easily and reliably formed on the bottom surface thereof.

図１０−１〜図１０−３に示すように、シールド掘進機１Ｂは、回転ドラム４０に第２軸心Ａ２の回りに回転可能に支持された正面視にて３角形形状のカッター支持フレーム５０Ｂと、このカッター支持フレーム５０Ｂに異なる３つの第３軸心Ａ３の回りに夫々回転可能に支持された３つの回転型カッター６０Ｂと、これら３つの回転型カッター６０Ｂを夫々回転駆動する３つの第３回転駆動機構（図示略）とを備え、前記の回転型補助カッター７０は省略されており、その他の構成は実施例１のシールド掘進機１と同様である。図１０−１のように円形断面のトンネルＴＢａを掘削することもできるし、図１０−１、図１０−２のように長円形断面のトンネルＴＢｂを掘削することもできる。   As shown in FIGS. 10-1 to 10-3, the shield machine 1B has a triangular shaped cutter support frame 50B supported by the rotary drum 40 so as to be rotatable around the second axis A2. And three rotary cutters 60B that are rotatably supported by the cutter support frame 50B around three different third axes A3, and three third cutters that rotationally drive the three rotary cutters 60B, respectively. A rotary drive mechanism (not shown) is provided, the rotary auxiliary cutter 70 is omitted, and the other configuration is the same as that of the shield machine 1 of the first embodiment. A tunnel TBa having a circular cross section can be excavated as shown in FIG. 10-1, and a tunnel TBb having an oval cross section can also be excavated as shown in FIGS. 10-1 and 10-2.

図１１−１〜図１１−３に示すように、シールド掘進機１Ｃは、回転ドラム４０に第２軸心Ａ２の回りに回転可能に支持された正面視にて菱形形状のカッター支持フレーム５０Ｃと、このカッター支持フレーム５０Ｃに異なる４つの第３軸心Ａ３の回りに夫々回転可能に支持された４つの回転型カッター６０Ｃと、これら４つの回転型カッター６０Ｃを夫々回転駆動する４つの第３回転駆動機構（図示略）とを備え、前記の回転型補助カッター７０は省略されており、その他の構成は実施例１のシールド掘進機１と同様である。図１１−１のように円形断面のトンネルＴＣａを掘削することもできるし、図１１−２、図１１−３のように片側を拡幅にしたトンネルＴＣｂを掘削することもできる。   As shown in FIGS. 11-1 to 11-3, the shield machine 1C includes a rhombus-shaped cutter support frame 50C in a front view supported by the rotary drum 40 so as to be rotatable around the second axis A2. , Four rotary cutters 60C rotatably supported around four different third axes A3 on the cutter support frame 50C, and four third rotations for rotating the four rotary cutters 60C, respectively. The rotary auxiliary cutter 70 is omitted, and the other configuration is the same as that of the shield machine 1 of the first embodiment. A tunnel TCa having a circular cross section can be excavated as shown in FIG. 11-1, and a tunnel TCb with one side widened as shown in FIG. 11-2 and FIG. 11-3 can be excavated.

図１２−１〜図１２−３に示すように、シールド掘進機１Ｄは、回転ドラム４０に第１軸心Ａ１に対して対称位置にある異なる１対の第２軸心Ａ２の回りに夫々回転可能に支持された１対のカッター支持フレーム５０Ｄと、１対のカッター支持フレーム５０Ｄを夫々回転駆動する１対の第２回転駆動機構（図示略）と、各カッター支持フレーム５０Ｄに異なる１対の第３軸心Ａ３の回りに夫々回転可能に支持された１対の回転型カッター６０Ｄ（合計４つの回転型カッター６０Ｄ）と、４つの回転型カッター６０Ｄを夫々回転駆動する４つの第３回転駆動機構（図示略）とを備え、前記の回転型補助カッター７０は省略されており、その他の構成は実施例１のシールド掘進機１と同様である。図１２−１のように円形断面のトンネルＴＤａを掘削することもできるし、図１２−２、図１２−３のように長円形断面のトンネルＴＤｂを掘削することもできる。   As shown in FIGS. 12-1 to 12-3, the shield machine 1D rotates around a pair of different second axes A2 that are symmetric with respect to the first axis A1 on the rotary drum 40, respectively. A pair of cutter support frames 50D supported in a possible manner, a pair of second rotational drive mechanisms (not shown) for rotationally driving the pair of cutter support frames 50D, and a pair of different cutter support frames 50D. A pair of rotary cutters 60D (a total of four rotary cutters 60D) that are rotatably supported around the third axis A3, and four third rotary drives that rotationally drive the four rotary cutters 60D, respectively. The rotary auxiliary cutter 70 is omitted, and the other configuration is the same as that of the shield machine 1 of the first embodiment. A tunnel TDa having a circular cross section can be excavated as shown in FIG. 12-1, and a tunnel TDb having an oval cross section can also be excavated as shown in FIGS. 12-2 and 12-3.

尚、回転ドラム４０の代わりに、隔壁１６の前側に配置されて放射状に延びる１又は複数のスポークを備えた第１回転部材を設けてもよい。この場合、１又は複数のスポークにカッター支持フレーム５０を回転可能に支持することで、前記実施例と同様の作用・効果が得られる。また、前記第１，第２アクチュエータとして、第１，第２油圧モータの代わりに、油圧ジャッキや電動モータを適用してもよい。 Instead of the rotating drum 40, a first rotating member provided with one or a plurality of spokes arranged in front of the partition wall 16 and extending radially may be provided. In this case, by supporting the cutter support frame 50 rotatably on one or a plurality of spokes, the same operation and effect as in the above-described embodiment can be obtained. Further, as the first and second actuators, hydraulic jacks or electric motors may be applied instead of the first and second hydraulic motors.

その他、本発明の趣旨を逸脱しない範囲において、種々の変更を付加して実施可能であるし、種々のシールド掘進機１に本発明を適用可能である。例えば、非常に固い岩盤等の地質を含む地山を掘削するシールド掘進機に適用する場合には、回転型カッター６０や回転型補助カッター７０に複数のカッタービットの代わりに複数のローラカッターを取付けて対応可能になる。また、セグメントＳを組み付けないトンネル掘削機に本発明の掘削装置を適用可能である。   In addition, various modifications can be added and implemented without departing from the spirit of the present invention, and the present invention can be applied to various shield machines 1. For example, when applied to a shield machine that excavates ground including geology such as very hard rock, a plurality of roller cutters are attached to the rotary cutter 60 and the rotary auxiliary cutter 70 instead of a plurality of cutter bits. Can be supported. Further, the excavator of the present invention can be applied to a tunnel excavator that does not assemble the segment S.

実施例１のシールド掘進機の縦断面図である。It is a longitudinal cross-sectional view of the shield machine of Example 1. シールド掘進機の正面図である。It is a front view of a shield machine. 左半部が図１のIIIa−IIIa線、右半部が図１のIIIb−IIIb線の断面図である。3 is a cross-sectional view taken along line IIIa-IIIa in FIG. 1 and the right half is taken along line IIIb-IIIb in FIG. カッター支持フレームと回転型カッターを含む要部の断面図である。It is sectional drawing of the principal part containing a cutter support frame and a rotary cutter. シールド掘進機の駆動制御系を示すブロック図である。It is a block diagram which shows the drive control system of a shield machine. 掘削装置のドラム回転角０度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 0 degree. 掘削装置のドラム回転角３０度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 30 degrees. 掘削装置のドラム回転角６０度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 60 degrees. 掘削装置のドラム回転角７３．７度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 73.7 degrees. 掘削装置のドラム回転角９０度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 90 degrees. 掘削装置のドラム回転角１０６．３度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 106.3 degrees. 掘削装置のドラム回転角１２０度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 120 degrees. 掘削装置のドラム回転角１５０度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 150 degrees. 掘削装置のドラム回転角１８０度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 180 degrees. 掘削装置のドラム回転角２１０度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 210 degrees. 掘削装置のドラム回転角２４０度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 240 degrees. 掘削装置のドラム回転角２５３．７度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 253.7 degrees. 掘削装置のドラム回転角２７０度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 270 degrees. 掘削装置のドラム回転角２８６．３度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 286.3 degrees. 掘削装置のドラム回転角３００度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 300 degrees. 掘削装置のドラム回転角３３０度のときの正面図である。It is a front view when the drum rotation angle of the excavator is 330 degrees. No.1カッターによる掘削範囲を示す図である。It is a figure which shows the excavation range by a No. 1 cutter. No.2カッターによる掘削範囲を示す図である。It is a figure which shows the excavation range by a No. 2 cutter. No.3カッターによる掘削範囲を示す図である。It is a figure which shows the excavation range by a No.3 cutter. No.1〜No.3カッターによる掘削範囲を示す図である。It is a figure which shows the excavation range by a No.1-No.3 cutter. 実施例２のシールド掘進機の正面図である。It is a front view of the shield machine of Example 2. 実施例２のシールド掘進機の正面図である。It is a front view of the shield machine of Example 2. 実施例２のシールド掘進機の正面図である。It is a front view of the shield machine of Example 2. 実施例３のシールド掘進機の正面図である。It is a front view of the shield machine of Example 3. 実施例３のシールド掘進機の正面図である。It is a front view of the shield machine of Example 3. 実施例３のシールド掘進機の正面図である。It is a front view of the shield machine of Example 3. 実施例４のシールド掘進機の正面図である。It is a front view of the shield machine of Example 4. 実施例４のシールド掘進機の正面図である。It is a front view of the shield machine of Example 4. 実施例４のシールド掘進機の正面図である。It is a front view of the shield machine of Example 4. 実施例５のシールド掘進機の正面図である。It is a front view of the shield machine of Example 5. 実施例５のシールド掘進機の正面図である。It is a front view of the shield machine of Example 5. 実施例５のシールド掘進機の正面図である。It is a front view of the shield machine of Example 5.

符号の説明Explanation of symbols

１，１Ａ〜１Ｄ シールド掘進機
２ 掘進機本体
３ シールドジャッキ
５ 掘削装置
１０ 胴体
１６ 隔壁
１９ チャンバー
４０ 回転ドラム
４５ 第１回転駆動機構
４６ 第１油圧モータ
５０，５０Ｂ〜５０Ｄ カッター支持フレーム
５５ 第２回転駆動機構
５６ 第２油圧モータ
６０，６０Ｂ〜６０Ｄ 回転型カッター
６５ 第３回転駆動機構
６６ 第３油圧モータ
７０ 回転型補助カッター
７５ 第４回転駆動機構
８０ 攪拌羽根
８５ 第５回転駆動機構
９０ 駆動制御ユニット DESCRIPTION OF SYMBOLS 1,1A-1D Shield machine 2 digging machine main body 3 Shield jack 5 Excavator 10 Body 16 Bulkhead 19 Chamber 40 Rotating drum 45 1st rotation drive mechanism 46 1st hydraulic motor 50, 50B-50D Cutter support frame 55 2nd rotation Drive mechanism 56 Second hydraulic motor 60, 60B to 60D Rotary cutter 65 Third rotary drive mechanism 66 Third hydraulic motor 70 Rotary auxiliary cutter 75 Fourth rotary drive mechanism 80 Stirrer blade 85 Fifth rotary drive mechanism 90 Drive control unit

Claims (9)

胴体を含む掘進機本体と、掘進機本体を推進させる複数のシールドジャッキと、掘進機本体の前端側の地山を掘削する掘削手段とを備えたシールド掘進機において、
前記掘進機本体の前端側部分に掘進機本体の中心軸と平行な第１軸心の回りに回転可能に支持された第１回転部材と、
前記第１回転部材を回転駆動する第１回転駆動手段と、
前記第１回転部材に前記第１軸心と平行で且つこの第１軸心から離隔した位置にある第２軸心の回りに回転可能に支持された第２回転部材と、
前記第２回転部材を第１回転部材に対して第１回転駆動手段とは独立に回転駆動する第２回転駆動手段と、
前記第２回転部材に前記第２軸心と平行で且つこの第２軸心から離隔した位置にある第３軸心の回りに回転可能に支持され表面に複数のカッタービット又はローラカッターを装備した回転型カッターと、
前記回転型カッターを第２回転部材に対して第１，第２回転駆動手段とは独立に回転駆動する油圧モータであって、前記第２回転部材に内蔵された油圧モータを有する第３回転駆動手段とを備え、
前記回転型カッターが掘進機本体の中心軸近傍の前方の地山を掘削可能に構成されたことを特徴とするシールド掘進機。
In a shield machine including an excavator main body including a fuselage, a plurality of shield jacks for propelling the excavator main body, and excavating means for excavating natural ground on the front end side of the excavator main body,
A first rotating member supported on the front end side portion of the excavator main body so as to be rotatable about a first axis parallel to the central axis of the excavator main body;
First rotational drive means for rotationally driving the first rotational member;
A second rotating member supported by the first rotating member so as to be rotatable around a second axis that is parallel to the first axis and spaced from the first axis;
Second rotation driving means for rotating the second rotation member with respect to the first rotation member independently of the first rotation driving means;
A plurality of cutter bits or roller cutters are provided on the surface of the second rotating member so as to be rotatable around a third axis that is parallel to the second axis and spaced apart from the second axis. A rotary cutter,
A hydraulic motor for rotating the rotary cutter with respect to the second rotary member independently of the first and second rotary drive means, and a third rotary drive having a hydraulic motor built in the second rotary member and means,
2. A shield machine according to claim 1, wherein the rotary cutter is configured to be able to excavate a natural ground in front of the center axis of the machine.
前記掘進機本体は、掘削土を回収可能なチャンバーと、そのチャンバーの後端を仕切る隔壁とを有し、
前記第１回転部材は、前記隔壁の一部を構成する板部材を有する回転ドラムからなることを特徴とする請求項１に記載のシールド掘進機。 The excavator body has a chamber capable of collecting excavated soil, and a partition wall that partitions the rear end of the chamber,
2. The shield machine according to claim 1, wherein the first rotating member includes a rotating drum having a plate member constituting a part of the partition wall. 前記第１回転駆動手段は、掘進機本体に取付けられた複数の第１アクチュエータを有し、前記第２回転駆動手段は、第１回転部材に取付けられた複数の第２アクチュエータを有し、前記第３回転駆動手段は、第２回転部材に取付けられた複数の前記油圧モータを有することを特徴とする請求項２に記載のシールド掘進機。 The first rotation driving means has a plurality of first actuators attached to an excavator main body, and the second rotation driving means has a plurality of second actuators attached to a first rotation member, 3. The shield machine according to claim 2, wherein the third rotation driving unit includes a plurality of the hydraulic motors attached to the second rotation member. 前記第２回転部材は、第１回転部材の外周部付近に回転可能に支持されたカッター支持フレームからなり、
前記第２回転部材と回転型カッターは、正面視にて回転型カッターが第１回転部材の外周よりも外側へ移動可能に構成されたことを特徴とする請求項３に記載のシールド掘進機。 The second rotating member comprises a cutter support frame that is rotatably supported near the outer periphery of the first rotating member,
4. The shield machine according to claim 3, wherein the second rotary member and the rotary cutter are configured such that the rotary cutter is movable outward from the outer periphery of the first rotary member in a front view. 前記第２回転部材に異なる複数の第３軸心の回りに夫々回転可能に支持された複数の回転型カッターと、これら複数の回転型カッターを夫々回転駆動する複数の前記油圧モータとを備えたことを特徴とする請求項４に記載のシールド掘進機。 A plurality of rotary cutters rotatably supported around a plurality of different third axes on the second rotary member, and a plurality of hydraulic motors that respectively rotate and drive the plurality of rotary cutters. The shield machine according to claim 4. 前記第１回転部材に異なる複数の第２軸心の回りに夫々回転可能に支持された複数の第２回転部材と、これら複数の第２回転部材を夫々回転駆動する複数の第２回転駆動手段とを備えたことを特徴とする請求項４又は５に記載のシールド掘進機。   A plurality of second rotation members that are rotatably supported around a plurality of different second axes by the first rotation member, and a plurality of second rotation drive means for rotationally driving the plurality of second rotation members, respectively. The shield machine according to claim 4 or 5, wherein the shield machine is provided. 前記第１〜第３回転駆動手段を駆動制御する駆動制御手段を備え、
前記駆動制御手段は、掘削するトンネルの断面形状に応じて第１回転部材の基準位相角からの回転位相角に対応付けて第２回転部材の回転角を制御するように、第１，第２回転駆動手段を制御することを特徴とする請求項１〜６の何れかに記載のシールド掘進機。 Drive control means for drivingly controlling the first to third rotation drive means;
The drive control means controls the rotation angle of the second rotation member in association with the rotation phase angle from the reference phase angle of the first rotation member according to the cross-sectional shape of the tunnel to be excavated. The shield machine according to any one of claims 1 to 6, wherein the rotary drive means is controlled. 前記第１回転部材に前記第１軸心と平行で且つこの第１軸心と前記第２軸心から離隔した位置にある第４軸心の回りに回転可能に支持され表面に複数のカッタービット又はローラカッターを装備した回転型補助カッターと、
前記回転型補助カッターを回転駆動する第４回転駆動手段と、
を備えたことを特徴とする請求項１〜７の何れかに記載のシールド掘進機。 A plurality of cutter bits supported on the surface of the first rotating member so as to be rotatable around a fourth axis that is parallel to the first axis and spaced apart from the first axis and the second axis. Or a rotary auxiliary cutter equipped with a roller cutter,
A fourth rotational drive means for rotationally driving the rotary auxiliary cutter;
The shield machine according to any one of claims 1 to 7, further comprising: 前記チャンバーの内部に配置され第１回転部材に回転可能に支持された攪拌羽根と、
前記攪拌羽根を回転駆動する攪拌羽根回転駆動手段とを備えたことを特徴とする請求項１〜８の何れかに記載のシールド掘進機。 A stirring blade disposed inside the chamber and rotatably supported by the first rotating member;
The shield machine according to any one of claims 1 to 8, further comprising a stirring blade rotation driving unit that rotationally drives the stirring blade.
JP2005225306A 2005-08-03 2005-08-03 Shield machine Active JP4375675B2 (en)

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