JP2637536B2 - Shield machine - Google Patents
Shield machineInfo
- Publication number
- JP2637536B2 JP2637536B2 JP304189A JP304189A JP2637536B2 JP 2637536 B2 JP2637536 B2 JP 2637536B2 JP 304189 A JP304189 A JP 304189A JP 304189 A JP304189 A JP 304189A JP 2637536 B2 JP2637536 B2 JP 2637536B2
- Authority
- JP
- Japan
- Prior art keywords
- cutter
- conical
- shield
- shield machine
- bulkhead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明はシールド掘進機、特に曲率半径の小さな曲線
施工が可能なシールド掘進機に関するものである。Description: TECHNICAL FIELD The present invention relates to a shield machine, and more particularly to a shield machine capable of constructing a curve with a small radius of curvature.
［従来の技術］ 一般にシールド掘進機で曲線施工を行う場合にはオー
バカッタ乃至コピーカッタによって余掘りを行い、この
余掘りを施した領域へ掘進機を進めて曲進する工法が採
られている。また、掘進機の曲線施工性を向上させ工事
費及び施工期間を縮小するためには余掘り量を少なくす
ることが求められている。一方、余掘り量が少ないと掘
進機を大きく曲げることができず、曲線施工の曲率半径
が大きくなるという関係がある。このような背景におい
て余掘り量が少なくても小さな曲率半径が得られるよう
なシールド掘進機として、シールドフレームをその軸方
向中間部にて二分割し、前部フレームと後部フレームと
が屈曲しながら掘進できる中折れ型シールド掘進機が考
えられている。[Related Art] In general, when performing curved construction with a shield machine, a method is employed in which an excavation is performed using an overcutter or a copy cutter, and the excavator is advanced to a region where the extra excavation has been performed and turns. In addition, in order to improve the curve workability of the excavator and to reduce the construction cost and the construction period, it is required to reduce the amount of excavation. On the other hand, if the amount of excavation is small, the excavator cannot be bent greatly, and there is a relationship that the radius of curvature of curved construction becomes large. In such a background, as a shield excavator such that a small radius of curvature can be obtained even if the amount of excavation is small, the shield frame is divided into two at the axial middle part, and the front frame and the rear frame are bent. A breakable shield excavator that can excavate is being considered.
第２図は従来の中折れ型シールド掘進機の一例を示す
もので、掘進用のシールドジャッキ１がその基端部２を
前部フレーム３へ回動自在に枢支させており、ジャッキ
推力はセグメント４の端面にスプレッダシュー５を介し
てその反力を得、前部フレーム３に作用するように構成
されている。従って基本的な進行は前部フレーム３が推
力を得、前部フレーム３と後部フレーム６との間に掛け
渡して設けられた屈曲用ジャッキ７を介して、後部フレ
ーム６が前部フレーム３に牽引されることになる。尚、
前記シールドジャッキ１と屈曲用ジャッキ７とは同一円
周上に交互に配置されている。また曲進する場合には、
曲線施工の曲率半径に応じて、後部フレーム６をその臨
む方向が自由に設定できるように遊びの状態にしてお
く。次に曲進方向の外周側にあたるシールドジャッキ１
で片押し操作し、前部フレーム３をガイド突部８を支点
として曲線軌跡に沿わせるように移行させる。後部フレ
ーム６が遊びの状態から前部フレーム３の屈曲に応じて
追従し、それぞれのシールドジャッキ１のストローク差
による中折れ角が確保される。この状態を連続的に確保
するため、シールドジャッキ１の片押し状態で掘進を行
う。FIG. 2 shows an example of a conventional bent-type shield excavator, in which a shield jack 1 for excavation pivotally supports a base end 2 of the excavation shield 2 to a front frame 3, and a jack thrust is shown. The reaction force is obtained on the end face of the segment 4 via the spreader shoe 5 and acts on the front frame 3. Therefore, the basic progress is that the front frame 3 obtains thrust, and the rear frame 6 is connected to the front frame 3 via the bending jack 7 provided between the front frame 3 and the rear frame 6. You will be towed. still,
The shield jacks 1 and the bending jacks 7 are alternately arranged on the same circumference. Also, when turning
The rear frame 6 is set in a play state so that the direction in which the rear frame 6 faces can be freely set according to the radius of curvature of the curved construction. Next, the shield jack 1 that corresponds to the outer peripheral side in the bending direction
To move the front frame 3 along the curved path with the guide projection 8 as a fulcrum. The rear frame 6 follows the bend of the front frame 3 from the state of play according to the bending of the front frame 3, and the middle bending angle due to the stroke difference of each shield jack 1 is secured. In order to continuously secure this state, excavation is performed with the shield jack 1 pressed in a single state.
尚、図中９の面板又はフレームからなるカッタ、10は
カッタ刃、11はカッタ９の後面にカッタチャンバ12を形
成するように前部フレーム３に設けられたバルクヘッド
（隔壁）を示す。In the drawing, a cutter consisting of a face plate or a frame 9 is shown, 10 is a cutter blade, and 11 is a bulkhead (partition wall) provided on the front frame 3 so as to form a cutter chamber 12 on the rear surface of the cutter 9.
［発明が解決しようとする課題］ しかし、上記従来の中折れ型シールド掘進機において
は、シールド掘進機全体の機長ｌをできるだけ短かくし
て余掘り量の減少と、曲率半径の小さな曲線施工を可能
にすることが行われているが、機長ｌの短縮には限界を
生じている。[Problems to be Solved by the Invention] However, in the above-mentioned conventional bent-type shield excavator, the length l of the entire shield excavator can be made as short as possible to reduce the amount of extra excavation and to perform a curved construction with a small radius of curvature. However, there is a limit to the reduction of the captain l.
本発明は、シールド掘進機の機長を短縮することを可
能にして、余掘り量の減少、又は曲率半径の小さな曲線
施工を達成させることを目的としている。An object of the present invention is to make it possible to shorten the length of a shield machine and to reduce the amount of extra excavation or achieve curved construction with a small radius of curvature.
［課題を解決するための手段］ 本発明は、バルクヘッドと、該バルクヘッドに回転可
能に支持されるカッタの夫々を、カッタの回転軸心側が
掘進方向前方に突出し、外周が掘進方向後方に向うよう
に傾斜した略平行な円錐形状としたことを特徴とするシ
ールド掘進機にかかるものである。Means for Solving the Problems According to the present invention, a bulkhead and a cutter rotatably supported by the bulkhead are provided such that a rotation axis side of the cutter protrudes forward in a digging direction, and an outer periphery extends rearward in a digging direction. The present invention relates to a shield excavator having a substantially parallel conical shape inclined so as to face.
［作用］ 円錐状カッタにより、シールド掘進機の全長が短縮さ
れ、よって余掘り量を減少させるか、又は曲率半径の小
さな曲線施工が可能となる。又、バルクヘッドの形状も
円錐状カッタと略平行な円錐形状を有しているので、カ
ッタチャンバの必要なスペースを確保して通常のカッタ
性能を保持させることができる。[Operation] The conical cutter shortens the overall length of the shield machine, thereby reducing the amount of extra excavation or enabling construction of a curve with a small radius of curvature. Also, since the shape of the bulkhead has a conical shape substantially parallel to the conical cutter, a necessary space in the cutter chamber can be secured and normal cutter performance can be maintained.
［実 施 例］ 以下、本発明の実施例を図面を参照しつつ説明する。[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例であり、図中第２図と同一
の符号を付した部分は同一物を表わしている。FIG. 1 shows an embodiment of the present invention. In FIG. 1, the same reference numerals as in FIG. 2 denote the same parts.
図示する如く、カッタの回転中心部が前方（推進方
向）に突出し、外周部が後方に向うように傾斜した形状
を有する円錐状カッタ13を、該円錐状カッタ13の後面に
カッタチャンバ14を形成するように前記円錐状カッタ13
と略平行に形成して前部フレーム15に一体に固定した円
錐状バルクヘッド16に、支持部16′を介して回転可能に
支持させる。図中17はギヤ18を介して前記円錐状カッタ
13の回転駆動を行う如く円錐状バルクヘッド16の後面側
に設けられた駆動モータ、19は土圧式シールド掘進機の
場合のスクリューコンベヤ、20は円錐状カッタ13の外周
端に収納され、シリンダ21で伸縮するオーバカッタを示
す。As shown in the drawing, a conical cutter 13 having a shape in which the center of rotation of the cutter protrudes forward (propulsion direction) and an outer peripheral portion is inclined rearward, and a cutter chamber 14 is formed on a rear surface of the conical cutter 13. So that the conical cutter 13
Is supported by a conical bulkhead 16 formed substantially in parallel with and integrally fixed to the front frame 15 via a support portion 16 '. In the figure, reference numeral 17 denotes the conical cutter via a gear 18.
A drive motor provided on the rear surface side of the conical bulkhead 16 so as to perform the rotational drive of 13, a screw conveyor 19 in the case of an earth pressure shield excavator, 20 is housed at the outer peripheral end of the conical cutter 13 and a cylinder 21 Indicates an overcutter that expands and contracts.
上記したように、円錐状カッタ13を設けることによ
り、従来のようにカッタの回転軸に対して直角に形成さ
れているカッタの形状に比べて、曲線施工時に問題とな
る前部フレーム15の長さをＳだけ短かくすることがで
き、従ってシールド掘進機の全長をＳだけ短縮させてオ
ーバカッタ20による余掘り量の減少を図り、又曲率半径
の小なさ曲線施工が可能となる。As described above, by providing the conical cutter 13, the length of the front frame 15, which is a problem at the time of curved construction, is shorter than the conventional shape of the cutter formed at right angles to the rotation axis of the cutter. Therefore, the total length of the shield machine can be shortened by S, so that the amount of extra digging by the over cutter 20 can be reduced, and a curve with a small radius of curvature can be constructed.
又、円錐状バルクヘッド16が円錐状カッタ13と略平行
な円錐形状を有しており、カッタチャンバ14の前後幅が
中央部と外周部とで同一であるため、カッタチャンバ14
内に取り込まれた大きなズリ（石）等がカッタチャンバ
14内に引掛るようなことがなく、よってカッタ13の性能
を何等損うようなことがない。Further, since the conical bulkhead 16 has a conical shape substantially parallel to the conical cutter 13 and the front and rear widths of the cutter chamber 14 are the same at the central portion and the outer peripheral portion, the cutter chamber 14
Large debris (stone) etc. taken in the cutter chamber
There is no possibility that the cutter 13 gets caught in the inside, and thus the performance of the cutter 13 is not impaired at all.
又、円錐状バルクヘッド16の後面には駆動モータ17等
が配置されるが、前記円錐形状によってこれらの配置に
支障を生じるようなことはない。The drive motor 17 and the like are arranged on the rear surface of the conical bulkhead 16, but the conical shape does not hinder the arrangement.
尚、本発明のシールド掘進機は、上述の実施例にのみ
限定されるものではなく、土圧式シールド掘進機以外に
も適用することができ、よってカッタは面板式、スポー
ク式を何等問わないこと、中折れ型以外でも曲線施工を
行うシールド掘進機には適用し得ること、その他本発明
の要旨を逸脱しない範囲内において種々変更を加え得る
ことは勿論である。In addition, the shield machine of the present invention is not limited to the above-described embodiment, and can be applied to other than the earth pressure shield machine, so that the cutter may be any type of face plate type or spoke type. It is needless to say that the present invention can be applied to a shield excavator that performs curved construction other than the bent type, and that various changes can be made without departing from the gist of the present invention.
［発明の効果］ 以上説明したように、本発明のシールド掘進機によれ
ば、円錐状カッタにより、シールド掘進機の機長を短縮
して余掘り量の減少、又は曲率半径の小さい曲線施工を
可能にし、且つ円錐状カッタと略平行な円錐状バルクヘ
ッドにより、円錐状カッタの後面に内外方向に均一なカ
ッタチャンバを形成させて通常のカッタ性能を確保させ
ることができる優れた効果を奏し得る。[Effects of the Invention] As described above, according to the shield machine of the present invention, the length of the shield machine can be shortened by the conical cutter to reduce the amount of extra excavation or to perform a curved construction with a small radius of curvature. With the conical bulkhead substantially parallel to the conical cutter, a uniform cutter chamber can be formed in the rear surface of the conical cutter in the inward and outward directions, and an excellent effect of securing normal cutter performance can be obtained.
第１図は本発明の一実施例の断面図、第２図は従来の中
折れ型シールド掘進機の一例を示す側面図である。 １はシールドジャッキ、６は後部フレーム、７は屈曲用
ジャッキ、13は円錐状カッタ、14はカッタチャンバ、15
は前部フレーム、16は円錐状バルクヘッドを示す。FIG. 1 is a cross-sectional view of one embodiment of the present invention, and FIG. 2 is a side view showing an example of a conventional half-bend shield machine. 1 is a shield jack, 6 is a rear frame, 7 is a bending jack, 13 is a conical cutter, 14 is a cutter chamber, 15
Denotes a front frame, and 16 denotes a conical bulkhead.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤井 茂男 愛知県名古屋市港区昭和町13番地 石川 島播磨重工業株式会社名古屋工場内 (56)参考文献 実開 昭58−103300（ＪＰ，Ｕ) 実開 昭59−80597（ＪＰ，Ｕ) ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeo Fujii 13-Showa-cho, Minato-ku, Nagoya-shi, Aichi Pref. Ishikawa Shima-Harima Heavy Industries Co., Ltd. Nagoya Plant (56) References Kaisho 59-80597 (JP, U)
Claims (1)
能に支持されるカッタの夫々を、カッタの回転軸心側が
掘進方向前方に突出し、外周が掘進方向後方に向うよう
に傾斜した略平行な円錐形状としたことを特徴とするシ
ールド掘進機。1. A bulkhead and a cutter rotatably supported by the bulkhead, each of which is substantially parallel to each other such that a rotation axis side of the cutter protrudes forward in a digging direction and an outer periphery is inclined so as to face rearward in a digging direction. A shield machine with a conical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP304189A JP2637536B2 (en) | 1989-01-10 | 1989-01-10 | Shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP304189A JP2637536B2 (en) | 1989-01-10 | 1989-01-10 | Shield machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02183091A JPH02183091A (en) | 1990-07-17 |
| JP2637536B2 true JP2637536B2 (en) | 1997-08-06 |
Family
ID=11546227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP304189A Expired - Lifetime JP2637536B2 (en) | 1989-01-10 | 1989-01-10 | Shield machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2637536B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0811918B2 (en) * | 1993-02-08 | 1996-02-07 | 川崎重工業株式会社 | Cutter head of tunnel excavator for widening |
-
1989
- 1989-01-10 JP JP304189A patent/JP2637536B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02183091A (en) | 1990-07-17 |
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