JPH01127794A - Shield excavator - Google Patents

Shield excavator

Info

Publication number
JPH01127794A
JPH01127794A JP28429287A JP28429287A JPH01127794A JP H01127794 A JPH01127794 A JP H01127794A JP 28429287 A JP28429287 A JP 28429287A JP 28429287 A JP28429287 A JP 28429287A JP H01127794 A JPH01127794 A JP H01127794A
Authority
JP
Japan
Prior art keywords
cutter
outer peripheral
frame
center
shield
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.)
Granted
Application number
JP28429287A
Other languages
Japanese (ja)
Other versions
JP2695801B2 (en
Inventor
Shigeo Fujii
茂男 藤井
Yuzuru Yoshida
譲 吉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
IHI Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IHI Corp filed Critical IHI Corp
Priority to JP62284292A priority Critical patent/JP2695801B2/en
Publication of JPH01127794A publication Critical patent/JPH01127794A/en
Application granted granted Critical
Publication of JP2695801B2 publication Critical patent/JP2695801B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

PURPOSE: To improve the earth and sand taking in property by forming a cutter frame by separating it into a central part and an outer peripheral part and rotating and driving them independently to make peripheral speeds of the outer peripheral part and the central part uniform. CONSTITUTION: A cutter frame 11 in a front end part of a shield frame 10 is separated into a central part 12 and an outer peripheral part 13, which are rotated and driven independently by motors 17, 19. The number of revolutions of the central part 12 and the outer peripheral part 13 is changed to make peripheral speeds uniform. Consequently, it is possible to improve the earth and sand taking in performance of, particularly, a shield machine having a large diameter and reduce eccentric wear of a cutter bit.

Description

【発明の詳細な説明】 [産業上の利用分野コ 本発明はカッタフレーム駆動方式を改良したシールド掘
進機に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a shield excavator with an improved cutter frame drive system.

[従来の技術] シールド掘進機のカッターフレーム支持方式には、第2
図〜第5図に示すものがある。即ち、カッタフレーム1
を、ドラム2で支持する周辺支持方式(第2図)、外周
ビーム4で支持する外周ビーム支持方式(第3図)、中
間ビーム5で支持する中間ビーム支持方式(第4図)、
センターシャフト6で支持するセンターシャフト支持方
式(第5図)がある。
[Prior art] The cutter frame support system for shield tunneling machines includes a second
There are those shown in Figs. That is, cutter frame 1
A peripheral support method (Fig. 2) in which the is supported by the drum 2, an outer peripheral beam support method (Fig. 3) in which it is supported by the outer peripheral beam 4, an intermediate beam support method in which it is supported by the intermediate beam 5 (Fig. 4),
There is a center shaft support method (FIG. 5) that supports the center shaft 6.

いずれの支持方式のものも、カッタフレーム1は一体物
であり、カッタフレーム1はそれぞれドラム2.外周ビ
ーム4.中間ビーム5.センターシャフト6を介して駆
動モータ3により回転駆動される。
In either type of support, the cutter frame 1 is an integral piece, and each cutter frame 1 is connected to a drum 2. Perimeter beam 4. Intermediate beam5. It is rotationally driven by a drive motor 3 via a center shaft 6.

[発明が解決しようとする問題点] 上記のような一体物のカッタフレーム1では、特に大口
径のシールド掘進機にあっては、カッタフレーム1の中
央部の周速と外周部の周速に大ぎな違いが生じ、土砂の
取込み性能がカッタフレーム1の径方向で一様でない。
[Problems to be Solved by the Invention] In the cutter frame 1 which is an integral piece as described above, especially in a large-diameter shield excavator, the circumferential speed at the center portion of the cutter frame 1 and the circumferential speed at the outer circumferential portion are different. A large difference occurs, and the soil uptake performance is not uniform in the radial direction of the cutter frame 1.

このため、カッタフレーム1の回転数は多くの場合その
外周部の周速により決定されるが、中央部の周速が遅く
なって土砂の取込み性能が悪くなっている。
For this reason, the rotational speed of the cutter frame 1 is determined in many cases by the circumferential speed of its outer circumferential portion, but the circumferential speed of the central portion is slow, resulting in poor earth and sand uptake performance.

またカッターフレーム1の外周部と中央部の周速が異な
るため、中央部よりも外周部側のカッタビットの掘削距
離が長く、外周部と中央部でカッタピットの摩耗に不均
一が発生している。
Additionally, since the circumferential speeds of the outer periphery and the center of the cutter frame 1 are different, the cutting distance of the cutter bit on the outer periphery is longer than that on the center, resulting in uneven wear of the cutter pit between the outer periphery and the center. There is.

本発明の目的は、上記の従来技術の問題点を解消し、カ
ッタフレームの外周部と中央部の周速を均一化し得るシ
ールド掘進機を提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a shield excavator that solves the problems of the prior art described above and can equalize the circumferential speed of the outer peripheral portion and the central portion of the cutter frame.

[問題点を解決するための手段] 本発明のシールド掘進機は、カッタフレームがカッタ中
央部とカッタ外周部とに分離形成され、それらが独立し
て回転駆動可能に設けられたものである。
[Means for Solving the Problems] In the shield excavator of the present invention, the cutter frame is formed separately into a cutter center portion and a cutter outer peripheral portion, and these are provided so as to be rotatably driven independently.

[作用] カッタフレームがカッタ中央部とカッタ外周部とに分離
され、それらが独立して回転駆動できるようになってい
るので、カッタ中央部の回転数をカッタ外周部の回転数
よりも大きくすることにより、カッタ外周部の周速とカ
ッタ中央部の周速とをほぼ等しくすることかできる。
[Function] The cutter frame is separated into the center of the cutter and the outer periphery of the cutter, which can be rotated independently, making the rotation speed of the center of the cutter greater than the number of rotations of the outer periphery of the cutter. By doing so, it is possible to make the circumferential speed of the outer peripheral portion of the cutter substantially equal to the circumferential speed of the central portion of the cutter.

[実施例] 以下に本発明の実施例を図面を用いて説明する。[Example] Embodiments of the present invention will be described below with reference to the drawings.

第1図に示すように、シールドフレーム10の前端部に
は切羽地山を掘削するためのカッタフレーム11が設け
られている。カッタフレーム11は、円盤状のカッタ中
央部12とその外周を囲むドーナツ状のカッタ外周部1
3とからなる。カッタ中央部12゜カッタ外周部13に
はそれぞれ図示省略するが切羽を掘削するカッタピット
と掘削土砂をバルクヘッド14で仕切られたカッタチャ
ンバ15内に取り込むためのスリットが設けられている
As shown in FIG. 1, a cutter frame 11 for excavating a face is provided at the front end of the shield frame 10. The cutter frame 11 includes a disc-shaped cutter center part 12 and a donut-shaped cutter outer peripheral part 1 surrounding the outer periphery of the cutter center part 12.
It consists of 3. Although not shown, a cutter pit for excavating a face and a slit for taking excavated earth and sand into a cutter chamber 15 partitioned by a bulkhead 14 are provided in the cutter central portion 12 and the cutter outer peripheral portion 13, respectively, although not shown.

カッタ中央部12にはセンターシャフト14が取り付け
られている。円筒状のセンターシャフト16内には軸受
が配設されており、センターシャフト16はバルクヘッ
ド14に回転自在に支持されている。
A center shaft 14 is attached to the cutter central portion 12. A bearing is disposed within the cylindrical center shaft 16, and the center shaft 16 is rotatably supported by the bulkhead 14.

またセンターシャフト16とバルクヘッド14との間は
シールドフレーム10内に掘削土砂が侵入しないように
シールがなされている。センターシャフト16にはギア
を介してカッタ中央部駆動モータ17が連結されている
。駆動モータ17はバルクヘッド14に取り付けられて
いる。
Further, a seal is provided between the center shaft 16 and the bulkhead 14 to prevent excavated earth and sand from entering the shield frame 10. A cutter center drive motor 17 is connected to the center shaft 16 via a gear. A drive motor 17 is attached to the bulkhead 14.

一方、カッタ外周部14には中間ビーム18が取り付け
らでいる。中間ビーム18も軸受によりバルクヘッド1
4に回転自在に支持されており、また中間ビーム18と
バルクヘッド14との間にはシールが介設されている。
On the other hand, an intermediate beam 18 is attached to the outer peripheral portion 14 of the cutter. The intermediate beam 18 is also connected to the bulkhead 1 by bearings.
4, and a seal is interposed between the intermediate beam 18 and the bulkhead 14.

また、中間ビーム18にはギアを介してカッタ外周部駆
動モータ19が連結されており、モータ19はバルクヘ
ッド14に固定されている。なお、20は土砂排出用の
スクリューコンベア、21は掘進用のシールドジヤツキ
、22はセグメント、23はエレクタである。
Further, a cutter outer peripheral drive motor 19 is connected to the intermediate beam 18 via a gear, and the motor 19 is fixed to the bulkhead 14. In addition, 20 is a screw conveyor for earth and sand discharge, 21 is a shield jack for digging, 22 is a segment, and 23 is an erector.

カッタ中央部12は、センターシャフト16を介してカ
ッタ中央部駆動モータ17により回転駆動される。また
、カッタ外周部13は、中間ビーム18を介してカッタ
外周部駆動モータ19により回転駆動される。
The cutter center portion 12 is rotationally driven by a cutter center portion drive motor 17 via a center shaft 16 . Further, the cutter outer circumferential portion 13 is rotationally driven by a cutter outer circumferential portion drive motor 19 via an intermediate beam 18 .

このように、カッタフレーム11がカッタ中央部12と
カッタ外周部13に分離され、支持機構もセンターシャ
フト16.中間ビーム18と別々で、カッタ中央部12
とカッタ外周部13を独立に駆動できるようになってい
るので、カッタ中央部12とカッタ外周部13の回転数
を異ならせることができる。そこで、カッタ中央部12
の回転数をカッタ外周部13の回転数よりも大きくする
ことにより、カッタ中央部12とカッタ外周部13の周
速をほぼ一致させることができる。
In this way, the cutter frame 11 is separated into the cutter center portion 12 and the cutter outer circumferential portion 13, and the support mechanism also includes the center shaft 16. Separate from the intermediate beam 18, the cutter central portion 12
Since the cutter outer peripheral part 13 can be driven independently, the rotation speeds of the cutter central part 12 and the cutter outer peripheral part 13 can be made different. Therefore, the center part 12 of the cutter
By making the rotational speed of the cutter outer peripheral portion 13 larger than the rotational speed of the cutter outer peripheral portion 13, the circumferential speeds of the cutter central portion 12 and the cutter outer peripheral portion 13 can be made to substantially match.

したがって、従来9周速が遅く土砂の取り込みが悪かっ
たカッタ中央部の土砂取込み性を向上できる。この土砂
取込み性の改善は殊に大口径のシールド掘進機において
著しい。また、カッタ中央部12とカッタ外周部13の
カッタピットの掘削距離がほぼ等しくなって平均化され
るので、カッタピットの摩耗がカッタ中央部12とカッ
タ外周部13とで均一になる。このため、シールド半径
方向のカッタピットの偏摩耗が軽減され、長路M掘削工
事に有効である。
Therefore, it is possible to improve the ability to take in earth and sand in the central part of the cutter, which conventionally had a slow circumferential speed and had poor ability to take in earth and sand. This improvement in soil uptake is particularly remarkable in large-diameter shield tunneling machines. In addition, since the cutter pit excavation distances of the cutter center portion 12 and the cutter outer circumference portion 13 are approximately equal and averaged, wear of the cutter pits becomes uniform between the cutter center portion 12 and the cutter outer circumference portion 13. Therefore, uneven wear of the cutter pit in the radial direction of the shield is reduced, which is effective for long route M excavation work.

なお、上記実施例においてはカッタ外周部13を中間ビ
ーム18で支持したが、外周ビームで支持するようにし
てもよい。また、カッタ中央部12.カッタ外周部13
の駆動源としての駆動モータ17.19は電動駆動また
は油圧駆動のいずれでもよく、また駆動モータ17.1
9をバルクヘッド14ではなくシールドフレーム10に
取り付けるようにしてもよい。
In the above embodiment, the cutter outer circumferential portion 13 is supported by the intermediate beam 18, but it may be supported by an outer circumferential beam. In addition, the cutter central portion 12. Cutter outer periphery 13
The drive motor 17.19 as a drive source may be either electric drive or hydraulic drive, and the drive motor 17.1
9 may be attached to the shield frame 10 instead of the bulkhead 14.

また、上記実施例ではカッタ中央部12とカッタ外周部
13とにそれぞれ独立に駆!I!lJ源を設けたが、同
−の駆動源を用い、駆動源からカッタ中央部12への動
力伝達系とカッタ外周部13への動力伝達系のギヤ比を
変えるようにしてもよい。
Furthermore, in the above embodiment, the cutter central portion 12 and the cutter outer peripheral portion 13 are each driven independently. I! Although the same drive source is provided, the gear ratio of the power transmission system from the drive source to the cutter central portion 12 and the power transmission system to the cutter outer peripheral portion 13 may be changed.

[発明の効果J 本発明によれば次の効果がある。[Effects of the invention J According to the present invention, there are the following effects.

(1)  カッタフレームがカッタ中央部とカッタ外周
部とからなり、それらが独立して回転駆動できる構造と
なっているため、カッタ外周部よりもカッタ中央部の四
転数を大きくすることにより、カッタ外周部とカッタ中
央部の周速を一致させることができ、シールド掘進機、
特に大口径のシールド掘進機の土砂取込み性を向上でき
る。
(1) The cutter frame consists of a central part of the cutter and a peripheral part of the cutter, which can be rotated independently, so by making the number of quadruple turns of the central part of the cutter larger than that of the peripheral part of the cutter, It is possible to match the circumferential speed of the outer circumference of the cutter and the center of the cutter, allowing shield tunneling machines,
In particular, it is possible to improve the earth and sand uptake performance of large-diameter shield tunneling machines.

(D また、カッタ外周部とカッタ中央部のカッタピッ
トの掘削距離の均一化が図れ、カッタピットの偏摩耗を
軽減でき、シールド掘進機の長側fill掘削に有効で
ある。
(D) In addition, the excavation distance between the cutter pit at the outer circumference of the cutter and the center of the cutter can be equalized, uneven wear of the cutter pit can be reduced, and it is effective for long-side fill excavation with a shield excavator.

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

第1図は本発明のシールド掘進機の一実施例を示す縦断
面図、第2図〜第5図はそれぞれ従来のシールド掘進機
の縦断面図である。 図中、10はシールドフレーム、11はカッタフレーム
、12はカッタ中央部、13はカッタ外周部、14はバ
ルクヘッド、15はカッタチャンバ、16はセンターシ
ャフト、17はカッタ中央部駆動モータ、18は中間ビ
ーム、19はカッタ外周部駆動モータ、20はスクリュ
ーコンベア、21はシールドジヤツキ、22はセグメン
ト、23はエレクタである。 特許出願人   石川島播r!4重工業株式会社代理人
弁理士   絹  谷  信  雄77・・・カッタ7
レーA I6 ・・f!ジターシャフト 17・・・力〜・メ中夫訂鳴tkh乞ブ78・・・中間
ビーム 19・・力・・・夕外用部j5I7vJεプ第1図
FIG. 1 is a vertical sectional view showing an embodiment of the shield tunneling machine of the present invention, and FIGS. 2 to 5 are vertical sectional views of conventional shield tunneling machines. In the figure, 10 is a shield frame, 11 is a cutter frame, 12 is a cutter center part, 13 is a cutter outer circumferential part, 14 is a bulkhead, 15 is a cutter chamber, 16 is a center shaft, 17 is a cutter center drive motor, and 18 is a An intermediate beam, 19 a cutter outer peripheral drive motor, 20 a screw conveyor, 21 a shield jack, 22 a segment, and 23 an erector. Patent applicant Ishikawajima Hari! 4 Heavy Industries Co., Ltd. Representative Patent Attorney Nobuo Kinutani 77...Catta 7
Ray A I6...f! Jitter shaft 17...force~・mechuo correction tkh request 78...intermediate beam 19...power...evening external use part j5I7vJεpu Figure 1

Claims (1)

【特許請求の範囲】[Claims] カッタフレームがカッタ中央部とカッタ外周部とに分離
形成され、それらが独立して回転駆動可能に設けられて
いることを特徴とするシールド掘進機。
A shield excavator characterized in that a cutter frame is formed separately into a cutter central part and a cutter outer peripheral part, and these parts are provided so as to be rotatable independently.
JP62284292A 1987-11-12 1987-11-12 Shield machine Expired - Fee Related JP2695801B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62284292A JP2695801B2 (en) 1987-11-12 1987-11-12 Shield machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62284292A JP2695801B2 (en) 1987-11-12 1987-11-12 Shield machine

Publications (2)

Publication Number Publication Date
JPH01127794A true JPH01127794A (en) 1989-05-19
JP2695801B2 JP2695801B2 (en) 1998-01-14

Family

ID=17676639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62284292A Expired - Fee Related JP2695801B2 (en) 1987-11-12 1987-11-12 Shield machine

Country Status (1)

Country Link
JP (1) JP2695801B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011111711A (en) * 2009-11-23 2011-06-09 Kazuhiro Ikeda Shield tunnel boring machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002213184A (en) * 2001-01-19 2002-07-31 Ishikawajima Harima Heavy Ind Co Ltd Multiple cutter driving structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011111711A (en) * 2009-11-23 2011-06-09 Kazuhiro Ikeda Shield tunnel boring machine

Also Published As

Publication number Publication date
JP2695801B2 (en) 1998-01-14

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