JPH02213592A - Shield drilling machine - Google Patents
Shield drilling machineInfo
- Publication number
- JPH02213592A JPH02213592A JP3376689A JP3376689A JPH02213592A JP H02213592 A JPH02213592 A JP H02213592A JP 3376689 A JP3376689 A JP 3376689A JP 3376689 A JP3376689 A JP 3376689A JP H02213592 A JPH02213592 A JP H02213592A
- Authority
- JP
- Japan
- Prior art keywords
- cutter
- section
- circular cross
- heads
- 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
Links
- 238000005553 drilling Methods 0.000 title abstract description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 238000009412 basement excavation Methods 0.000 claims description 24
- 230000008859 change Effects 0.000 abstract description 13
- 238000005192 partition Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、複数のカッタヘッドによって複円形断面に掘
削するシールド掘削機に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a shield excavator that excavates into a compound circular cross section using a plurality of cutter heads.
(従来の技術)
シールド掘削機の従来例を第7.8図によって説明する
と、第7図に示すシールド掘削機は、シールド機体(1
)内に設けた隔壁(2)の前部にカッタチャンバ(3)
を形成してカッタヘッド(5)を配設し、回転駆動機構
(図示省略)によりカッタシャフト(4)を介しカッタ
ヘッド(5)を回転駆動して単円形断面にシールド掘削
する構造になっており、第8図に示すシールド掘削機は
、シールド機体(1a)内に設けた隔壁(2a)の前部
にカッタチャンバ(3a)を形成し先行カッタヘッド(
5a)と後行カッタヘッド(5b)を上下差(または左
右)および前後差をつけて配設し、各回転駆動機構(図
示省略)によりカッタシャフト(4a) (4b)を介
し前、後行カッタヘッド(5a) (5b)を回転駆動
し、縦長または横長の複円形断面にシールド掘削する構
造になっている0図中(7)はカッタスリット部、(8
)はカッタビット、(9)は仕切板である。(Prior Art) A conventional example of a shield excavator will be explained with reference to Fig. 7.8. The shield excavator shown in Fig. 7 has a shield body (1
) A cutter chamber (3) is installed in front of the partition wall (2) provided in the
A cutter head (5) is installed in the cutter head (5), and a rotary drive mechanism (not shown) rotates the cutter head (5) via a cutter shaft (4) to perform shield excavation into a single circular cross section. The shield excavator shown in FIG.
5a) and a trailing cutter head (5b) are arranged with vertical (or horizontal) and front-to-back differences, and each rotary drive mechanism (not shown) allows the front and rear cutter heads to be cut through the cutter shafts (4a) and (4b). The cutter head (5a) (5b) is rotated to perform shield drilling into a vertically or horizontally long double-circular cross section.
) is a cutter bit, and (9) is a partition plate.
(発明が解決しようとする課り
従来の前記単円形断面のシールド掘削機(第7図)は、
複数のトンネル施工に際しては、複数本の円形トンネル
を単独で掘削するか、大断面の円形断面トンネルを掘削
する必要があり、前者は、トンネルルートの選択自由度
が低く、用地取得等に要する施工費用が増大し、後者は
、掘削断面中に不要部分が多くなり、また、単円のカッ
タフェイスで大断面に掘削するため、切羽の安全性が低
下するなど施工技術上の問題点が多い。(Issues to be solved by the invention) The conventional shield excavator (FIG. 7) with a single circular cross section has the following problems:
When constructing multiple tunnels, it is necessary to excavate multiple circular tunnels individually or to excavate a large circular cross-section tunnel, and the former has less freedom in selecting the tunnel route and requires more construction work such as land acquisition. The cost increases, and the latter method has many problems in terms of construction technology, such as the fact that there are many unnecessary parts in the excavation cross section, and the safety of the face decreases because excavation is performed over a large cross section with a single circular cutter face.
従来の前記複円形断面のシールド掘削機は、先行カッタ
ヘッドと後行カッタヘッドを有し複円形断面の掘削によ
り2連式の複線トンネルに対応できるが、先、後行カッ
タヘッドの配置が縦長または横長の複円形断面に特定さ
れて、施工現場(切羽等)の地質条件(地層、水分等)
に対する機体の姿勢制御、切羽安定等の対応性に問題が
あり、また、駅部や円形断面トンネルへの接合部のよう
にトンネルを複円形断面と単円形断面に相互変更する必
要がある場合に、直接施工できず別工法を導入する必要
がある。The conventional shield excavator with a double-circular cross section has a leading cutter head and a trailing cutter head, and can handle double-track double-track tunnels by excavating a double-circular cross-section, but the leading and trailing cutter heads are arranged vertically. Or the geological conditions (geological strata, moisture, etc.) of the construction site (face, etc.) are specified by a horizontally long double circular cross section.
When there are problems with the attitude control of the aircraft, stability of the face, etc., or when it is necessary to change the tunnel cross-section to a double circular cross-section and a single circular cross-section, such as at a station or a joint to a circular cross-section tunnel. , it is not possible to construct it directly and it is necessary to introduce a different construction method.
また、急、曲進掘削は、カッタヘッドの外周に突出され
るコピーカッタによって余を屈り掘削することにより対
処されているが、余掘り土砂のカッタチャンバへの取り
込み性能、余掘り切削性能等の問題があり、急曲進性能
が悪いなどの問題点がある。In addition, sudden and curved excavations are handled by bending over the excavation using a copy cutter that is protruded from the outer periphery of the cutter head. There are problems such as poor performance in sharp turns.
本発明は、前記のような課題に対処するために開発され
たものであって、その目的とする処は、隔壁の前部に配
設された複数のカッタヘッドを、各回転駆動機構により
機体中心軸の周囲の定位置で回転駆動可能とし、各回転
駆動機構と旋回装置により各カッタヘッドの公転、旋回
によるヘッド相互の配置変更と大円形断面の掘削を可能
として、シールド掘削性能、能率を向上したシールド掘
削機を提供するにある。The present invention was developed in order to solve the above-mentioned problems, and its purpose is to move a plurality of cutter heads disposed at the front of a bulkhead to the fuselage body using respective rotary drive mechanisms. The cutter head can be rotated at a fixed position around the central axis, and each rotation drive mechanism and rotation device allow each cutter head to revolve and rotate to change the mutual arrangement of the heads and excavate large circular cross sections, improving shield excavation performance and efficiency. To provide an improved shield excavator.
(!!1題を解決するための手段)
本発明は、シールド機体内の隔壁の前部に配設した複数
のカッタヘッドを、各回転駆動機構により各カッタシャ
フトを介し機体中心軸の周囲で回転駆動して複円形断面
に掘削するシールド掘削機において、前記隔壁の前側に
配設され前記各カッタシャフトを軸受して回転と固定に
切り換えられる旋回用支持部材と、前記回転駆動機構の
間に併設された公転駆動機構からなり前記各カッタヘッ
ドを前記機体中心軸を中心にして公転しヘッド相互の配
置変更と大円形断面の掘削に駆動する旋回装置を設けた
構成に特徴を有し、旋回用支持部材の固定、公転駆動機
構の不作動によって、各回転駆動機構により各カッタヘ
ッドの定位置の回転駆動による通常の複円形断面に掘削
し、旋回用支持部材の回転と各回転駆動機構および公転
駆動機構の作動によって、ヘッド相互の配置変更と大円
形断面の掘削を可能にするとともに、曲進掘削性を高め
ている。(!!Means for Solving Problem 1) The present invention allows a plurality of cutter heads disposed at the front of a bulkhead in a shield machine body to be rotated around the center axis of the machine body through each cutter shaft by each rotation drive mechanism. In a shield excavator that is rotatably driven to excavate into a double circular cross section, a swing support member disposed in front of the partition wall that bears each of the cutter shafts and can be switched between rotating and fixed, and the rotary drive mechanism. It consists of an attached revolving drive mechanism, and is characterized by a structure in which each of the cutter heads revolves around the center axis of the machine body, and is equipped with a turning device that drives the heads to change their mutual arrangement and excavate a large circular cross section. By fixing the rotation support member and inactivating the revolution drive mechanism, each rotary drive mechanism excavates into a normal double circular cross section by rotationally driving each cutter head at a fixed position. The operation of the revolution drive mechanism makes it possible to change the arrangement of the heads and excavate large circular cross sections, while also improving curved excavation performance.
(作 用)
旋回用支持部材を固定し、公転駆動機構を不作動にして
、各回転駆動機構により各カッタシャフトを介して各カ
ッタヘッドを機体中心軸の周囲の定位置で回転駆動し、
通常の複円形断面に掘削する。(Function) The rotation support member is fixed, the revolution drive mechanism is deactivated, and each cutter head is rotated at a fixed position around the center axis of the machine by each rotation drive mechanism via each cutter shaft,
Excavate to a normal double circular cross section.
旋回用支持部材を回転可能とし、各回転駆動機構ととも
に公転駆動機構を作動すると、各カッタヘッドが回転駆
動とともに機体中心軸を中心にして公転し、切羽条件等
に対応して各カッタヘッド相互の配置変更つまり先行、
後行の配置が変更され、掘削が円滑に効率よく遂行され
る。When the swing support member is made rotatable and the revolution drive mechanism is operated together with each rotation drive mechanism, each cutter head revolves around the center axis of the machine along with the rotation drive, and the cutter heads rotate between each other according to the face conditions, etc. Rearrangement, that is, advance,
The trailing position has been changed to ensure that excavation is carried out smoothly and efficiently.
さらに、各カッタヘッドを回転駆動するとともに公転に
より旋回させて、大円形断面の掘削に随時に切り換えら
れる。Further, each cutter head is driven to rotate and rotated by revolution, thereby switching to excavation of a large circular cross section at any time.
(実施例)
第1図ないし第4図に本発明の一実施例を示し、図中(
11)は複円形断面のシールド機体、(12)はシール
ド機体(11)内の隔壁、(14a) (14b) (
14c)はカッタシャフト、(13)はカッタチャンバ
、(15a) (15b)(15c)はカッタスリット
部(17)、カッタビット群(18)Wヲ有するカッタ
ヘッドであって、シールド機体(II)内の隔壁(12
)の前部に配置した複数のカッタへウド(15a) (
15b) (15c)を、各回転駆動S構(21a、2
2.23a) (21b、22,23bH2Ic、22
,23c)により各カッタシャフト(14a) (14
b) (14c)を介し機体中心軸(o−o)の周囲で
回転駆動して複円形断面に掘削するシールド掘削機にお
いて、隔壁(12)の前側に配設されカッタヘッド(1
5a) (15b) (15c)を軸受(32a) (
32b) (32c) して回転と固定に切り換えられ
る旋回用支持部材(30)と、回転駆動機構(21a、
2223a) (21b、 22.23b) (21c
、 22.23c)の間に併設された公転駆動機構(3
5、36)からなりカッタヘッド(15a)(15b)
(15c)を機体中心軸(o−o)を中心にして公転
しヘッド相互の配置変更と大円形断面の掘削に駆動する
旋回装置を設けたシールド掘削機になっている。(Embodiment) An embodiment of the present invention is shown in FIGS. 1 to 4, and (
11) is a shield body with a double circular cross section, (12) is a bulkhead inside the shield body (11), (14a) (14b) (
14c) is a cutter shaft, (13) is a cutter chamber, (15a) (15b) (15c) is a cutter head having a cutter slit part (17) and a cutter bit group (18) W, which is a shield body (II). Internal bulkhead (12
) A plurality of cutter heads (15a) arranged in front of (
15b) (15c) to each rotation drive S structure (21a, 2
2.23a) (21b, 22, 23bH2Ic, 22
, 23c), each cutter shaft (14a) (14
b) In a shield excavator that excavates in a double circular cross section by rotating around the center axis (o-o) of the machine body through (14c), the cutter head (1
5a) (15b) (15c) to bearing (32a) (
32b) (32c) A swing support member (30) that can be switched between rotation and fixation, and a rotation drive mechanism (21a,
2223a) (21b, 22.23b) (21c
, 22.23c)
Cutter head (15a) (15b)
(15c) is a shield excavator equipped with a rotating device that revolves around the center axis (o-o) of the machine body and drives the heads to change the mutual arrangement and excavate a large circular cross section.
前記カッタヘッド(15a) (15b) (15c)
は、第1回に示すように前後差をつけて機体中心軸(o
−o)の周囲に配設され、個別に回転駆動される3個の
カッタヘッドにより複円形断面にシールド掘削する。The cutter head (15a) (15b) (15c)
As shown in Part 1, the center axis of the aircraft (o
-o) Shield excavation is performed in a double circular cross section using three cutter heads arranged around the area and driven to rotate individually.
前記回転駆動機構(21a、 22.23a) (21
b、 22.23b)(21c、 22.23c)は、
カッタシャフト(14a)に固設された歯車(21a)
と内歯歯車(22)および隔壁(12)に固設された回
転駆動用モータ(23a)等からなるカッタヘッド(1
5a)の回転駆動機構(21a、22,23a)、カッ
タシャフト(14b)に固設された歯車(21b)と内
歯歯車(22)および隔壁(12)に固設された回転駆
動用モータ(23b)等からなるカッタヘッド(15b
)の回転駆動機構(21b、22,23b)、およびカ
ッタシャツ) (14c)に固設された歯車(21c)
と内歯歯車(22)および隔壁(12)に固設された回
転駆動用モータ(23c)等からなるカッタヘッド(1
5c)の回転駆動機構(21c、 22.23c)にな
っており、各カッタシャフト(14a) (14b)
(14c)を介して各カッタヘッド(15a) (15
b) (15c)を別個に回転駆動する。The rotational drive mechanism (21a, 22.23a) (21
b, 22.23b) (21c, 22.23c) is
Gear (21a) fixed to cutter shaft (14a)
A cutter head (1) consisting of an internal gear (22), a rotary drive motor (23a) fixed to the partition wall (12), etc.
5a), the rotational drive mechanism (21a, 22, 23a), the gear (21b) and internal gear (22) fixed to the cutter shaft (14b), and the rotational drive motor (21a, 22, 23a) fixed to the partition wall (12). The cutter head (15b
) rotational drive mechanism (21b, 22, 23b), and a gear (21c) fixed to the cutter shirt (14c)
A cutter head (1) consisting of an internal gear (22), a rotary drive motor (23c) fixed to the partition wall (12), etc.
5c) rotation drive mechanism (21c, 22.23c), each cutter shaft (14a) (14b)
(14c) to each cutter head (15a) (15
b) Separately drive (15c) in rotation.
前記旋回用支持部材(30)は、シールド機体(12)
の内側に固設された各支持部材(31) (31) (
31)内にシール部材(32)を介して回転可能に配設
され、隔壁(12)の前側で機体中心軸(o−o)を中
心にして回転するとともに、適宜の手段でシールド機体
(11)側に回転止めして固定され、カッタシャフト(
14a)(14b) (14c)をラジアルおよびスラ
ストの軸受(32a)(32b) (32c)で軸受け
し、旋回用支持部材(30)の回転によりカッタシャフ
ト(14a) (14b) (14c)を介してカッタ
ヘッド(15a) (15b) (15c)を機体中心
軸(o−o)を中心として公転可能にする。The swing support member (30) is a shield body (12).
Each supporting member (31) (31) (
The shield body (11) is rotatably disposed within the shield body (31) via a seal member (32), and rotates around the body center axis (o-o) on the front side of the bulkhead (12). ) side, and the cutter shaft (
14a), (14b), and (14c) are supported by radial and thrust bearings (32a), (32b, and 32c), and the rotating support member (30) rotates through the cutter shafts (14a, 14b, and 14c). The cutter head (15a) (15b) (15c) is made to be able to revolve around the body center axis (o-o).
前記公転駆動機構(35,36)は、各回転駆動機構の
歯車(21a) (21b) (21c)間に介装され
て噛合された公転用歯車(35)と、公転用歯車(35
)に連結され隔壁(12)に固設された公転用モータ(
36)等からなり、前記回転駆動機構と該公転駆動機構
は遊星歯車機構に構成され、前記旋回用支持部材(30
)とともにカッタヘッド(15a) (15b) (1
5c)を機体中心軸(o−o)を中心にして公転し、ヘ
ッド相互の配置変更と大円形断面の掘削に駆動する旋回
装置になっている。The revolution drive mechanism (35, 36) includes a revolution gear (35) interposed and meshed between the gears (21a), (21b), and (21c) of each rotation drive mechanism, and a revolution gear (35).
) is connected to the revolution motor (
36), etc., the rotational drive mechanism and the revolution drive mechanism are configured as a planetary gear mechanism, and the rotation support member (30
) along with the cutter head (15a) (15b) (1
5c) is a rotating device that revolves around the center axis (o-o) of the machine body and drives the mutual arrangement of the heads and excavation of a large circular cross section.
また、隔壁(12)、各支持部材(31)には複数の送
泥管(38a) 、排泥管(38b)が設けられて、カ
ッタチャンバ(13)に連通されている(第3図参照)
。Further, the partition wall (12) and each support member (31) are provided with a plurality of mud feeding pipes (38a) and mud draining pipes (38b), which communicate with the cutter chamber (13) (see Fig. 3). )
.
本発明の実施例は、前記のような構成になっており作用
について詳述すると、通常のシールド掘削時は、旋回用
支持部材(30)を適宜の手段(図示省略)によりシー
ルド機体(11)側に固定し回転を止めて行われ、隔壁
(12)の後方に設けた複数の推進ジヤツキ(図示省略
)をセグメント(図示省略)に当て機全体を推進すると
ともに、各回転駆動用モータ(23a) (23b)
(23c)を作動すると、内歯歯車(22)を介し各歯
車(21a) (21b) (21c)とともにカッタ
シャフト(14a) (14b) (14c)が個別に
回転され、公転用歯車(35)は回転自在とし、各カッ
タヘッド(15a) (15b) (15c)は、機体
中心軸(o−o)の周囲の特定位置で回転駆動されて、
3個のカッタヘッドによる複円形断面にシールド掘削さ
れ、掘削土砂等は、各カッタヘッドの各カッタスリット
部(17)からカッタチャンバ(13)内に取り込まれ
、送泥管(38a)から供給される加圧泥水とともに排
泥管(38b)により機体後方に排出されて掘進され、
同時に3本の円形トンネルに相当する施工となる。The embodiment of the present invention has the above-mentioned configuration, and its operation will be explained in detail. During normal shield excavation, the swing support member (30) is moved to the shield body (11) by appropriate means (not shown). A plurality of propulsion jacks (not shown) provided at the rear of the bulkhead (12) are applied to segments (not shown) to propel the entire machine, and each rotation drive motor (23a) ) (23b)
(23c), the cutter shaft (14a) (14b) (14c) is individually rotated together with each gear (21a) (21b) (21c) via the internal gear (22), and the revolution gear (35) is rotatable, and each cutter head (15a) (15b) (15c) is rotationally driven at a specific position around the center axis (o-o) of the machine body.
Shield excavation is performed in a double circular cross section using three cutter heads, and the excavated earth and sand are taken into the cutter chamber (13) through each cutter slit (17) of each cutter head and supplied from the mud feeding pipe (38a). The pressurized mud water is discharged to the rear of the aircraft through the mud drainage pipe (38b) and dug.
Construction will be equivalent to three circular tunnels at the same time.
次に、掘削地盤(切羽)の地盤等の条件に対応させて、
機体の姿勢を制御し切羽の安定を維持するために、各カ
ッタヘッド(15a) (15b) (15c)相互の
先行、後行の配置変更の必要が生じたり、駅部や大円形
断面トンネル部を形成する必要が生じると、各カッタヘ
ッドの公転によって可能となる。Next, depending on the conditions such as the ground of the excavated ground (face),
In order to control the attitude of the aircraft and maintain the stability of the face, it may be necessary to change the positions of the leading and trailing cutter heads (15a), (15b), and (15c), or to change the positions of the cutting heads (15a), (15b, and 15c) in the stations and large circular cross-section tunnels. If the need arises to form a cutter head, this is made possible by the revolution of each cutter head.
旋回用支持部材(30)を回転可能とし、回転駆動用モ
ータ(23a) (23b) (23c)および公転用
モータ(36)を作動すると、公転用歯車(35)、該
歯車(35)に噛合した各カッタシャフトの歯車(21
a) (21b) (21c)、各歯車(21a) (
21b) (2fc)に噛合した内歯歯車(22)等か
らなる遊星歯車機構により、旋回用支持部材(30)が
回転され各カッタヘッド(15a) (15b) (1
5c)が機体中心軸(o−o)を中心にして公転される
ため、約120’ 、240°公転させて、各力′ンタ
ヘッド(15a)(15b) (15c)の相対配置の
変更、つまり各カッタヘッドの先行、後行の配置が容易
に変更されて、切羽の条件等に対応させてシールド掘削
性能を高めることができるとともに、さらに前記公転を
継続した旋回作動とし、各カッタヘッド(15a) (
15b)(15c)をそれぞれ回転駆動して大円形断面
の掘削作動に切り換えられる。When the rotation support member (30) is made rotatable and the rotation drive motors (23a) (23b) (23c) and the revolution motor (36) are operated, the revolution gear (35) meshes with the revolution gear (35). The gear (21) on each cutter shaft
a) (21b) (21c), each gear (21a) (
21b) (2fc) The rotating support member (30) is rotated by a planetary gear mechanism consisting of an internal gear (22) meshed with (2fc), etc., and each cutter head (15a) (15b) (1
5c) is revolved around the center axis (o-o) of the aircraft, it is rotated approximately 120' and 240° to change the relative position of each force' interface head (15a), (15b), and (15c), i.e. The leading and trailing positions of each cutter head can be easily changed, making it possible to improve shield excavation performance in accordance with the conditions of the face, etc. In addition, each cutter head (15a ) (
15b) and 15c are rotated to switch to excavation operation with a large circular cross section.
前記遊星歯車機構において、各歯車間に相互作用運動に
おける各歯車の回転速度(静止状態も含む)、回転方向
は、歯車の組み合せ、歯数、支持条件等を適宜に選択す
ることにより任意に選択可能であって、所望の機能に設
定される。In the planetary gear mechanism, the rotation speed (including a stationary state) and rotation direction of each gear in the interaction movement between each gear can be arbitrarily selected by appropriately selecting the combination of gears, the number of teeth, supporting conditions, etc. possible and set to the desired function.
通常の複円形断面の掘削からカッタヘッドの公転運動を
伴う大円形断面の掘削に移行する際には、崩壊性の高い
地盤等では、カッタヘッドの公転運動による大断面掘削
時に切羽安定性が損われる恐れがあり、薬液注入等の切
羽安定処理が必要となる。トンネル線形の変更(急カー
ブ、勾配変更)、第1図(8)から第2図(B)へのカ
ッタヘッドの配置変更、カッタヘッドのメンテナンス等
の作業時は、通常、地表面から立坑を掘り、この立坑内
で行う必要があるが、本方法によれば、シールド機の外
接円相当の地中空間を掘削可能であるため、この空間を
利用して、上記の段取り替え工事が可能となる。When transitioning from normal double-circular cross-section excavation to large-circular cross-section excavation that involves the revolution of the cutter head, face stability may be lost when excavating a large cross section due to the revolution of the cutter head in highly collapsible ground. There is a risk that the surface will be damaged, and face stabilization treatment such as chemical injection is required. When changing the tunnel alignment (sharp curves, changing gradients), changing the cutter head placement from Figure 1 (8) to Figure 2 (B), or performing maintenance on the cutter head, it is normal to remove the shaft from the ground surface. However, according to this method, it is possible to excavate an underground space equivalent to the circumscribed circle of the shield machine, so this space can be used to perform the above setup change work. Become.
第5,6図は、第1図ないし第4図によって説明した前
記実施例のシールド掘削機における機体後部の一実施例
を示すものであって、前記シールド機体(11)の後側
に前胴(41)を固設し、前胴(41)にシール部材(
42)を介装して後11Ftl(43)を伸縮可能(屈
折可能)に延設し、隔壁(12)側と後[i (43)
間に複数の伸縮用ジヤツキ(45)を連結するとともに
、後胴(43)内に複数の推進ジャ゛ンキ(46)を設
け、後胴(43)の外周側に設けた複数の凹部(43a
)内に油圧ジヤツキ等で進退される主グリッパ(47)
を設け、さらに隔壁(12)の外周側に設けた複数の凹
部(12a)内に油圧ジヤツキ等で進退される副グリッ
パ(48)を配設した構造になっており、通常の複円形
断面の掘削時は、複数の推進ジヤツキ(46)を組立て
施工されたセグメント(図示省略)の前部に当て機全体
の推力を得るとともに、各伸縮用ジヤツキ(イ5)によ
り後胴(43)に対し前胴(41)を伸長させてさらに
推力を得ることができ、各カッタヘッド(15a)(1
5b) (15c)をそれぞれ回転駆動するとともに機
体中心軸(o−o)を中心にして公転、旋回して大円形
断面の掘削をする際は、第6図に示すように各主グリッ
パ(47)を外周に突出し大径のトンネル内壁に押圧し
て後胴(43)を固定し、後! (43)、前胴(41
)、シールド機体(11)等の回転を防止して、各伸縮
用ジヤツキ(45)の伸長により前胴(41)を伸長せ
しめ推力を得るとともに、各副グリッパ(48)を外周
に突出させて大径のトンネル内壁に押圧して@胴(41
)側を固定し、各主グリッパ(47)を後退し各伸縮用
ジヤツキ(45)を短縮し後胴(43)を前進して、前
記推力を確保し、大円形断面の掘削が円滑に遂行される
。該掘削時に各推進ジヤツキ(46)もセグメントに当
て推力をさらに高める。また、各伸縮用ジヤツキ(45
)の伸長差によって前胴(41)に対し後胴(43)を
屈折操作でき、曲進掘削も円滑となる。5 and 6 show an embodiment of the rear body of the shield excavator according to the embodiment described in FIGS. (41) is fixedly installed, and the seal member (
42), the rear 11Ftl (43) is extendable and retractable (bendable), and the partition wall (12) side and the rear [i (43)
A plurality of expansion and contraction jacks (45) are connected between them, a plurality of propulsion jacks (46) are provided in the rear body (43), and a plurality of recesses (43a) provided on the outer circumferential side of the rear body (43) are connected.
) The main gripper (47) is moved forward and backward by a hydraulic jack, etc.
It has a structure in which an auxiliary gripper (48) that is moved forward and backward by a hydraulic jack etc. is arranged in a plurality of recesses (12a) provided on the outer circumferential side of the partition wall (12), and has a normal double circular cross section. During excavation, multiple propulsion jacks (46) are attached to the front of assembled segments (not shown) to obtain the thrust of the entire machine, and each telescoping jack (A5) is used to provide thrust to the rear body (43). Further thrust can be obtained by extending the front body (41), and each cutter head (15a) (1
5b) (15c), as well as revolving and rotating around the center axis (o-o) of the machine to excavate a large circular cross section, as shown in Figure 6, each main gripper (47 ) protrudes from the outer periphery and presses it against the inner wall of the large diameter tunnel to fix the rear trunk (43), and the rear! (43), front torso (41
), the rotation of the shield body (11), etc. is prevented, and the front body (41) is extended by the extension of each telescopic jack (45) to obtain thrust, and each sub gripper (48) is made to protrude to the outer periphery. Press against the inner wall of the large diameter tunnel
) side is fixed, each main gripper (47) is retreated, each telescopic jack (45) is shortened, and the rear barrel (43) is advanced to secure the thrust and smoothly perform excavation of a large circular cross section. be done. During the excavation, each propulsion jack (46) also hits the segment to further increase the thrust. In addition, each expansion jack (45
) The rear barrel (43) can be bent relative to the front barrel (41) due to the difference in extension between the two, and curved excavation can be performed smoothly.
(発明の効果)
本発明は、前述のような構成からなり、旋回用支持部材
を固定し、各回転駆動機構により複数のカッタヘッドを
機体中心軸の周囲の所定位置で回転駆動して、通常の複
円形断面に掘削するとともに、旋回用支持部材を回転可
能とし、各回転駆動機構と併設された公転駆動機構の作
動により、各カッタヘッドがそれぞれ自転されるととも
に機体中心軸を中心にして公転され、ヘッド相互の配置
変更と大円形断面の掘削に切り換えられ、切羽の状態等
に対応させた最適な各カッタヘッドの先行、後行の配置
変更が可能であり、複円形断面の掘削性能、能率が著し
く向上されるとともに、必要に応じて大円形断面の掘削
に切り換え可能であり、また、急曲進掘削性も高められ
、シールド掘削性能、能率が大幅に向上されている。(Effects of the Invention) The present invention has the above-described configuration, and the swing support member is fixed, and each rotational drive mechanism rotates a plurality of cutter heads at predetermined positions around the center axis of the machine body. In addition to excavating into a double circular cross section, the swing support member is made rotatable, and by the operation of the revolution drive mechanism attached to each rotation drive mechanism, each cutter head rotates on its own axis and revolves around the center axis of the machine. It is now possible to change the position of each cutter head and to excavate a large circular cross section, and it is possible to change the leading and trailing positions of each cutter head to suit the conditions of the cutting face, etc., which improves the performance of excavating a double circular cross section. Efficiency has been significantly improved, and it is possible to switch to excavation with a large circular cross section as needed, and the ability to excavate in sharp turns has also been improved, greatly improving shield excavation performance and efficiency.
以上本発明を実施例について説明したが、勿論本発明は
このような実施例にだけ局限されるものではなく、本発
明の精神を逸脱しない範囲内で種々の設計の改変を施し
うるものである。Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .
第1図(A) (B)は本発明の一実施例を示す要部縦
断面図と正面図、第2図(A) (B)はヘッド配置変
更の状態を示す要部縦断面図と正面図、第3図は第1図
(^)の111−111部分の断面図、第4図は第1図
(A)のIV−rV部分の断面図、第5図は第1図の機
体後部の実施例を示す全体の縦断面図、第6図は第5図
のVl−V1部分の断面図、第7図(A) (B)は従
来例の要部縦断面図と正面図、第8図(A)(B)は他
の従来例を示す要部縦断面図と正面図である。
11:シールド機体 12:隔壁
14a、14b、14c :カツタシャフト15a、
15b、15c :カツタヘッド21a、 22.2
3a−21b、 22.23b−21c、 22.23
c :回転駆動機構30:旋回用支持部材 32a、
32b、32c :軸受35.36 :公転駆動機構Figures 1 (A) and (B) are longitudinal cross-sectional views and front views of essential parts showing an embodiment of the present invention, and Figures 2 (A) and (B) are longitudinal cross-sectional views of essential parts showing changes in the head arrangement. Front view, Figure 3 is a sectional view of the 111-111 section in Figure 1 (^), Figure 4 is a sectional view of the IV-rV section in Figure 1 (A), and Figure 5 is the fuselage in Figure 1. 6 is a sectional view of the Vl-V1 portion of FIG. 5; FIGS. 7(A) and 7(B) are longitudinal sectional views and front views of main parts of the conventional example; FIGS. 8(A) and 8(B) are a vertical sectional view and a front view of main parts showing another conventional example. 11: Shield body 12: Bulkheads 14a, 14b, 14c: Cut shaft 15a,
15b, 15c: cutter head 21a, 22.2
3a-21b, 22.23b-21c, 22.23
c: Rotation drive mechanism 30: Swing support member 32a,
32b, 32c: Bearing 35.36: Revolution drive mechanism
Claims (1)
ッドを、各回転駆動機構により各カッタシャフトを介し
機体中心軸の周囲で回転駆動して複円形断面に掘削する
シールド掘削機において、前記隔壁の前側に配設され前
記各カッタシャフトを軸受して回転と固定に切り換えら
れる旋回用支持部材と、前記回転駆動機構の間に併設さ
れた公転騒動機構からなり前記各カッタヘッドを前記機
体中心軸を中心にして公転しヘッド相互の配置変更と大
円形断面の掘削に駆動する旋回装置を設けたことを特徴
とするシールド掘削機。In the shield excavator that excavates into a double circular cross section by rotating a plurality of cutter heads disposed at the front part of a bulkhead in the shield machine body through each cutter shaft by each rotary drive mechanism around the center axis of the machine body, It consists of a swing support member disposed on the front side of the bulkhead that bears each of the cutter shafts and can be switched between rotating and fixed, and a revolving turbulence mechanism installed between the rotational drive mechanism, and each cutter head is rotated to the center of the machine body. A shield excavator characterized by being equipped with a rotating device that revolves around an axis and drives the mutual arrangement of heads and excavation of large circular cross sections.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3376689A JP2539025B2 (en) | 1989-02-15 | 1989-02-15 | Shield excavator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3376689A JP2539025B2 (en) | 1989-02-15 | 1989-02-15 | Shield excavator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02213592A true JPH02213592A (en) | 1990-08-24 |
JP2539025B2 JP2539025B2 (en) | 1996-10-02 |
Family
ID=12395564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3376689A Expired - Fee Related JP2539025B2 (en) | 1989-02-15 | 1989-02-15 | Shield excavator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2539025B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105422109A (en) * | 2015-11-18 | 2016-03-23 | 上海隧道工程有限公司 | Planetary type shield multi-cutterhead driving device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102587929B (en) * | 2012-03-23 | 2014-01-08 | 中铁隧道装备制造有限公司 | Earth pressure balance shield machine without cutter disk |
-
1989
- 1989-02-15 JP JP3376689A patent/JP2539025B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105422109A (en) * | 2015-11-18 | 2016-03-23 | 上海隧道工程有限公司 | Planetary type shield multi-cutterhead driving device |
Also Published As
Publication number | Publication date |
---|---|
JP2539025B2 (en) | 1996-10-02 |
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