JPS622117B2 - - Google Patents
Info
- Publication number
- JPS622117B2 JPS622117B2 JP18737480A JP18737480A JPS622117B2 JP S622117 B2 JPS622117 B2 JP S622117B2 JP 18737480 A JP18737480 A JP 18737480A JP 18737480 A JP18737480 A JP 18737480A JP S622117 B2 JPS622117 B2 JP S622117B2
- Authority
- JP
- Japan
- Prior art keywords
- mud
- cutter head
- making material
- excavated soil
- material injection
- 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
Links
- 239000000463 material Substances 0.000 claims description 50
- 238000002347 injection Methods 0.000 claims description 31
- 239000007924 injection Substances 0.000 claims description 31
- 239000002689 soil Substances 0.000 claims description 19
- 239000010802 sludge Substances 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 7
- 239000011295 pitch Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【発明の詳細な説明】
本発明はシールド掘進機の作泥材注入装置に関
するものであり、その目的はカツターヘツド背部
に取り込まれた掘削土砂中に塑性流動化改良材等
の作泥材を注入して混合させる場合に、その作泥
材注入管の長さを短くしてカツターヘツドの回転
抵抗を増加させる要因をできるだけ減少させ、作
泥材注入を確実ならしめることにある。[Detailed Description of the Invention] The present invention relates to a mud-forming material injection device for a shield excavator, and its purpose is to inject mud-forming material such as a plastic fluidization improver into excavated soil taken into the back of a cutter head. To ensure reliable injection of sludge by reducing the factors that increase the rotational resistance of the cutter head as much as possible by shortening the length of the sludge material injection pipe.
シールド掘進機ではカツターヘツド背部に取り
込んだ掘削土砂に塑性流動化改良材等の作泥材を
注入混合し、この掘削土削を塑性化して排土する
ことが行なわれる。従来、作泥材を掘削土砂中へ
注入する方法として、カツターヘツドの回転中心
軸やシールド本体の静止部分の内部に作泥材注入
路を有せしめ、これらの注入路を通じて行なうも
のが提案されている。この場合前者は固定された
作泥材供給管との接続部にロータリージヨイント
を介装し、また後者は作泥材の注入箇所がシール
ド本体の複数箇所において固定されたものであつ
た。ところで、作泥材は、できるだけカツタヘツ
ド内上部に注入した方が、掘削土砂との混合効果
がよい(重力により落下する間に混合が十分に成
される)。なお、ただ単に作泥注入管をカツタヘ
ツドの中央部の固定隔壁に接続しただけでは、上
記したように、作泥材は上部に注入できないた
め、掘削土砂との混合効果が悪い。しかし、作泥
材をカツターヘツドのできるだけ上部に注入する
ためには、作泥材注入路が他の機器との干渉を避
ける必要があり、どうしても作泥注入路が長くな
る。また、前述したように、作泥材注入路を構成
する配管類は多数箇所において、固定しなければ
ならず、必然的に曲線部が増加する。このため、
配管長および曲線部が増えると、配管抵抗が増加
し、十分に作泥材をカツターヘツド内に送り込め
ない。したがつて、掘削土砂中の作泥材の量が少
なくなり、カツターヘツドの回転抵抗を増加させ
るという欠点を有していた。 In a shield excavator, a mud preparation material such as a plastic fluidization improver is injected and mixed into the excavated soil taken into the back of the cutter head, and the excavated soil is made plastic and discharged. Conventionally, as a method for injecting mud-making material into excavated soil, a method has been proposed in which mud-making material injection paths are provided inside the rotating central axis of the cutter head or the stationary part of the shield body, and the mud-making material is injected through these injection paths. . In this case, the former has a rotary joint interposed at the connection to the fixed mud-making material supply pipe, and the latter has mud-making material injection points fixed at multiple locations on the shield body. By the way, it is better to inject the mud material into the upper part of the cut head as much as possible to have a better mixing effect with the excavated soil (sufficient mixing is achieved while it falls due to gravity). In addition, if the slurry injection pipe is simply connected to the fixed bulkhead in the center of the cutter head, the slurry material cannot be injected into the upper part, as described above, and the mixing effect with the excavated soil will be poor. However, in order to inject the mud material into the upper part of the cutter head as much as possible, it is necessary to prevent the mud material injection path from interfering with other equipment, which inevitably results in a long mud material injection path. Furthermore, as described above, the piping constituting the sludge material injection path must be fixed at many locations, which inevitably increases the number of curved sections. For this reason,
As the length and curved portion of the pipe increases, the resistance of the pipe increases, making it difficult to feed the slurry material into the cutter head sufficiently. Therefore, the amount of mud material in the excavated soil is reduced, which has the drawback of increasing the rotational resistance of the cutter head.
本発明は以上に鑑みてなされたものであり、以
下その実施例を説明する。 The present invention has been made in view of the above, and examples thereof will be described below.
1はカツターヘツドであり、これはその背面に
筒状の囲繞壁2を有し、この囲繞壁2がシールド
本体3の前部に軸受4等を介して軸支される。囲
繞壁2はその後板2Aの中央部に筒体5が貫入固
定される。一方、シールド本体3に図示しない支
持材を介して匣体6が設けられる。匣体6は外筒
6A、内筒6B、前板6C及び後板6Dからな
り、その内部に環状の作泥材収容室7を有する。
そしてこの匣体6が前記筒体5に軸受8、シール
9等を介して同心状に嵌入される。10は排土用
のスクリユーコンベアであり、これはケーシング
10Aと、リボンスクリユーフイーダ10Bとを
備える。すなわちケーシング10Aは、その一端
部が前記匣体6に嵌入保持されて該ケーシング1
0Aの内部が前記囲繞壁2の内部の掘削土砂取込
室11に連通せしめられ、その後部に排土口(図
示せず。)を有する。またリボンスクリユーフイ
ーダ10Bは、その後端がケーシング10Aに設
けられた回転駆動モータ(図示せず。)に連結さ
れ、その先端部が前記掘削土砂取込室11内中心
部へ突出せしめられる。 Reference numeral 1 denotes a cutter head, which has a cylindrical surrounding wall 2 on its back surface, and this surrounding wall 2 is pivotally supported at the front part of the shield body 3 via a bearing 4 or the like. In the surrounding wall 2, a cylindrical body 5 is inserted and fixed in the center of the rear plate 2A. On the other hand, a case 6 is provided on the shield main body 3 via a support member (not shown). The case 6 consists of an outer cylinder 6A, an inner cylinder 6B, a front plate 6C, and a rear plate 6D, and has an annular mud-making material storage chamber 7 inside thereof.
The casing 6 is concentrically fitted into the cylindrical body 5 via a bearing 8, a seal 9, etc. Reference numeral 10 denotes a screw conveyor for soil removal, which includes a casing 10A and a ribbon screw feeder 10B. That is, the casing 10A has one end fitted and held in the casing 6.
The inside of 0A is communicated with the excavated soil intake chamber 11 inside the surrounding wall 2, and has a soil discharge port (not shown) at the rear thereof. Further, the rear end of the ribbon screw feeder 10B is connected to a rotary drive motor (not shown) provided in the casing 10A, and its tip portion is made to protrude into the center of the excavated earth and sand intake chamber 11.
一方、掘削土砂取込室11内における外周部に
複数の作泥材注入管12が該取込室11の周方向
所要ピツチ(等ピツチ)おきに設けられる。これ
らの作泥材注入管12の先端部はカツターヘツド
1の面板裏面部において掘削土砂取込室11内に
向けて開口せしめられ、その先端開口部12Aに
閉塞防止板13が設けられる。そして作泥材注入
管12の後端部は囲繞壁2の後板2Aを貫通し、
前記筒体5に穿設された孔14に接続される。こ
れに対し、前記匣体6の外筒6Aに、そのほぼ上
半周域に亘つて長穴15が形成される。すなわち
この長穴15は、前記作泥材注入管12の基端開
口12Bのカツターヘツド1の回転に伴なう回転
経路に沿つて形成されたものであり、この長穴1
5と作泥材注入管の基端開口12Bが対応する。
そして長穴15の両側において、筒体5と匣体6
との間にシール用OリングRが介在さぜる。16
は作泥材供給管であり、これは匣体6内の作泥材
収容室7に接続される。図示例においてはこの
他、匣体6を貫通する作泥材注入管17が設けら
れる。 On the other hand, a plurality of sludge material injection pipes 12 are provided on the outer periphery of the excavated soil intake chamber 11 at required pitches (equal pitches) in the circumferential direction of the intake chamber 11 . The tips of these mud making material injection pipes 12 are opened toward the inside of the excavated soil intake chamber 11 on the back side of the face plate of the cutter head 1, and a blocking prevention plate 13 is provided at the tip opening 12A. The rear end of the sludge material injection pipe 12 penetrates the rear plate 2A of the surrounding wall 2,
It is connected to a hole 14 bored in the cylinder 5. On the other hand, an elongated hole 15 is formed in the outer cylinder 6A of the case 6 over approximately the upper half circumference thereof. That is, this elongated hole 15 is formed along the rotation path accompanying the rotation of the cutter head 1 of the base end opening 12B of the mud making material injection pipe 12.
5 corresponds to the base end opening 12B of the slurry material injection pipe.
Then, on both sides of the elongated hole 15, the cylinder body 5 and the case body 6
A sealing O-ring R is interposed between the two. 16
is a mud-making material supply pipe, which is connected to the mud-making material storage chamber 7 inside the casing 6. In the illustrated example, in addition to this, a mud preparation material injection pipe 17 that penetrates the case 6 is provided.
以上によればカツターヘツド1と共に作泥材注
入管12が回転するとき、その回転経路の上半周
域では該作泥材注入管12の基端開口12Bが匣
体6の長穴15を介して作泥材収容室7に連通す
る。したがつてこの間では作泥材注入管12の先
端開口部12Aから掘削土砂取込室11内へ作泥
材が注入される。しかし前記回転経路の下半周域
では匣体6の外筒6Aにより作泥材注入管12の
基端開口12Bが閉基されるため、注入は行なわ
れない。作泥材注入管12は複数本設けられるか
ら、結局、掘削土砂取込室11内へは常時その上
半周域において作泥材の注入が継続される。 According to the above, when the mud making material injection pipe 12 rotates together with the cutter head 1, the base end opening 12B of the mud making material injection pipe 12 is inserted through the elongated hole 15 of the casing 6 in the upper half circumference of the rotation path. It communicates with the mud storage chamber 7. Therefore, during this period, the mud making material is injected into the excavated soil intake chamber 11 from the tip opening 12A of the mud making material injection pipe 12. However, in the lower half of the rotation path, the base end opening 12B of the slurry material injection pipe 12 is closed by the outer cylinder 6A of the case 6, so no injection is performed. Since a plurality of mud-making material injection pipes 12 are provided, the mud-making material is always injected into the excavated soil intake chamber 11 in the upper half circumference thereof.
第4図は、作泥材注入管18を直線状のパイプ
にて構成し、その後端にボールバルブ19を介装
すると共に、その途中において前記筒体5の孔1
4を接続したものを示す。20は接続管である。
これによれば作泥材注入管18が詰まつたような
場合に、ボールバルブ19を開き、作泥材注入管
18の後端から棒(図示せず。)を挿入したり、
あるいはこれと併行してジエツト水を噴出させる
ことにより管内の清掃、洗浄を容易に行なうこと
ができる。 In FIG. 4, the sludge material injection pipe 18 is constructed of a straight pipe, and a ball valve 19 is interposed at the rear end, and a hole 1 of the cylindrical body 5 is inserted in the middle of the pipe.
4 is connected. 20 is a connecting pipe.
According to this, when the mud-making material injection pipe 18 becomes clogged, the ball valve 19 is opened and a rod (not shown) is inserted from the rear end of the mud-making material injection pipe 18.
Alternatively, by spouting jet water at the same time, the inside of the pipe can be easily cleaned and washed.
以上の説明から明らかなように、本発明によれ
ば掘削土砂取込室内上部に常時作泥材の注入を行
なうことができるので、作泥材と掘削土砂との混
合が効果的に行なわれる。また、作泥材の注入
を、シールド本体側に固定された匣体内の作泥材
収容室およびその基端開口が作泥材収容室に臨む
ようにされた作泥材注入管を介して行なうように
したので、全長を配管した場合に比べて、配管長
および曲折部を少なくでき、したがつて配管抵抗
が減少するため、作泥材を十分に注入できるの
で、カツターヘツドの回転抵抗の増加を抑えるこ
とができる。 As is clear from the above description, according to the present invention, the mud material can be constantly injected into the upper part of the excavated soil intake chamber, so that the mud material and the excavated soil can be mixed effectively. In addition, the mud-making material is injected through the mud-making material storage chamber in the casing fixed to the shield main body side and the mud-making material injection pipe whose base end opening faces the mud-making material storage chamber. As a result, the length of the pipe and the number of bends can be reduced compared to the case where the entire length of the pipe is piped, which reduces piping resistance and allows for sufficient injection of mud material, reducing the increase in rotational resistance of the cutter head. It can be suppressed.
第1図〜第3図は本発明実施例を示し、第1図
は縦断面図、第2図は第1図におけるA−A断面
矢視図、第3図は同B−B断面矢視図であり、第
4図は変形例の要部を示す縦断面図である。
1……カツターヘツド、2……囲繞壁、3……
シールド本体、6……連体、7……作泥材収容
室、11……掘削土砂取込室、12,18……作
泥材注入管、12A……先端開口部、12B……
基端開口、15……長孔。
1 to 3 show embodiments of the present invention, FIG. 1 is a longitudinal sectional view, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 3 is a cross-sectional view taken along line B-B in FIG. FIG. 4 is a longitudinal sectional view showing the main part of a modification. 1... cutter head, 2... enclosing wall, 3...
Shield body, 6... Linkage, 7... Sludge material storage chamber, 11... Excavation soil intake chamber, 12, 18... Sludge material injection pipe, 12A... Tip opening, 12B...
Base end opening, 15...long hole.
Claims (1)
削土砂取込室を形成したカツターヘツドをシール
ド本体の前部で軸支すると共に、作泥材供給管が
接続される環状の作泥材収容室を有する匣体を前
記カツターヘツド後部でシールド本体側に固定
し、前記カツターヘツドにその掘削土砂取込室内
部の周方向所要ピツチおきに開口する複数の作泥
材注入管を設け、この作泥材注入管の基端開口が
臨む長穴を、この基端開口の回転経路に沿うよう
前記匣体の外壁上部に形成したことを特徴とする
シールド掘進機の作泥材注入装置。1. A cutter head having a surrounding wall on the back and an excavated soil intake chamber formed inside the surrounding wall is pivotally supported at the front part of the shield body, and an annular mud-making material storage to which a mud-making material supply pipe is connected. A case having a chamber is fixed to the shield body side at the rear of the cutter head, and a plurality of mud-making material injection pipes are provided in the cutter head and open at required pitches in the circumferential direction inside the excavated soil intake chamber, and the mud-making material is injected into the cutter head. A sludge material injection device for a shield excavator, characterized in that an elongated hole facing the base end opening of the injection pipe is formed in the upper part of the outer wall of the casing along the rotation path of the base end opening.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18737480A JPS57112595A (en) | 1980-12-26 | 1980-12-26 | Mud injector for shielded excavator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18737480A JPS57112595A (en) | 1980-12-26 | 1980-12-26 | Mud injector for shielded excavator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57112595A JPS57112595A (en) | 1982-07-13 |
JPS622117B2 true JPS622117B2 (en) | 1987-01-17 |
Family
ID=16204883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18737480A Granted JPS57112595A (en) | 1980-12-26 | 1980-12-26 | Mud injector for shielded excavator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57112595A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020148997A1 (en) | 2019-01-15 | 2020-07-23 | ブルーオプテック株式会社 | Wearable image display device |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5885697U (en) * | 1981-12-01 | 1983-06-10 | 三菱重工業株式会社 | Shield type tunnel excavator |
JPS59114397A (en) * | 1982-12-16 | 1984-07-02 | 株式会社 青木建設 | Shield drilling machine |
JPS6033995A (en) * | 1983-08-03 | 1985-02-21 | 大豊建設株式会社 | Shield machine |
-
1980
- 1980-12-26 JP JP18737480A patent/JPS57112595A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020148997A1 (en) | 2019-01-15 | 2020-07-23 | ブルーオプテック株式会社 | Wearable image display device |
Also Published As
Publication number | Publication date |
---|---|
JPS57112595A (en) | 1982-07-13 |
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