JPS5923116Y2 - Sediment adhesion prevention device for shield excavator - Google Patents
Sediment adhesion prevention device for shield excavatorInfo
- Publication number
- JPS5923116Y2 JPS5923116Y2 JP6867278U JP6867278U JPS5923116Y2 JP S5923116 Y2 JPS5923116 Y2 JP S5923116Y2 JP 6867278 U JP6867278 U JP 6867278U JP 6867278 U JP6867278 U JP 6867278U JP S5923116 Y2 JPS5923116 Y2 JP S5923116Y2
- Authority
- JP
- Japan
- Prior art keywords
- sand
- earth
- prevention device
- cutter frame
- adhesion prevention
- 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
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【考案の詳細な説明】
本考案は、例えばシールド工法に用いられるシールド掘
進機において回転するカッタフレームの内周面に付着す
る土砂を排除するための土砂付着防止装置に関する。[Detailed Description of the Invention] The present invention relates to an earth and sand adhesion prevention device for removing earth and sand adhering to the inner circumferential surface of a rotating cutter frame in a shield excavator used in, for example, the shield construction method.
前述したシールド掘進機においてカッタフレームの内周
面に付着した土砂を排除するため、従来から高圧ジェッ
ト水流を噴射していた。In the above-mentioned shield excavator, a high-pressure jet water stream has conventionally been injected in order to remove earth and sand adhering to the inner circumferential surface of the cutter frame.
しかしながら、このようにして土砂を排除するのでは、
高価な設備が必要とされるし、また、掘削効率を妨げる
原因にもなっていた。However, removing sediment in this way
This requires expensive equipment and also hinders excavation efficiency.
本考案は、前述した従来のものにおける欠点を除去し、
作業中、自動的に内周面に土砂が付着しないようにした
シールド掘進機等の土砂付着防止装置を提供することを
目的とする。The present invention eliminates the drawbacks of the conventional ones mentioned above,
An object of the present invention is to provide an earth and sand adhesion prevention device for a shield excavator, etc., which automatically prevents earth and sand from adhering to the inner peripheral surface during work.
以下、本考案を図面に示す実施例により説明する。The present invention will be explained below with reference to embodiments shown in the drawings.
第１図は実施例の全体を示すものであり、シールドフレ
ーム１の先端にはカッタフレーム２が回転し得るように
取付けられており、このカッタフレーム２の先端面には
カッタ３が設けられている。FIG. 1 shows the entire embodiment, in which a cutter frame 2 is rotatably attached to the tip of a shield frame 1, and a cutter 3 is provided on the tip surface of this cutter frame 2. There is.
そして、カッタフレーム２が回転しながら前進すること
により、先端のカッタ３が土砂を掘削し、この掘削され
た土砂はカッタフレーム２内に取込まれる。Then, as the cutter frame 2 moves forward while rotating, the cutter 3 at the tip excavates earth and sand, and this excavated earth and sand is taken into the cutter frame 2.
前記シールドフレーム１内にはスクリューコンベア４が
配設されており、カッタフレーム２内に取込まれた土砂
を搬送するようになっている。A screw conveyor 4 is disposed within the shield frame 1 and is adapted to convey the earth and sand taken into the cutter frame 2.
このスクリューコンベア４への土砂の供給は、カッタフ
レーム２内に放射方向に取付けられている複数の板体５
，５・・・・・・によりなされるようになっている。The supply of earth and sand to this screw conveyor 4 is carried out by a plurality of plate bodies 5 installed in the cutter frame 2 in a radial direction.
, 5......
すなわち、これらの板体５もカッタフレーム２の回転と
共に回転するので、フレーム２内の土砂は順次これらの
板体５上に乗って上方に達し、ここで傾斜状態になった
板体５から滑り落ちてカッタフレーム２の中心位置に配
されたスクリューコンベア４に供給されるのである。In other words, since these plates 5 also rotate with the rotation of the cutter frame 2, the earth and sand in the frame 2 sequentially rides on these plates 5 and reaches the upper part, where it slides from the inclined plate 5. It falls and is supplied to a screw conveyor 4 located at the center of the cutter frame 2.
また、前記カッタフレーム２の内周面の大部分の位置に
は多数の密閉体６，６・・・・・・が取付けられている
。Further, a large number of sealing bodies 6, 6, . . . are attached to most positions on the inner peripheral surface of the cutter frame 2.
各密閉体６は例えば四角形状の断面を有する可撓性材料
からなり、内部空所７が形成され、この内部空所７内に
は気体が封入されている。Each sealing body 6 is made of a flexible material having a rectangular cross section, for example, and has an internal cavity 7 formed therein, in which gas is sealed.
そして密閉体６の内部空所７内に所望圧力の気体が封入
されるよう、カッタ停止時にカッタフレーム２に固着さ
れたバルブ８を気体供給源（図示せず）に接続し、各内
部空所７内にバルブ８を介して気体を送入した後バルブ
８を閉じて気体を内部空所７内に密閉封入し、気体供給
源との接続を断つようにしている。Then, when the cutter is stopped, a valve 8 fixed to the cutter frame 2 is connected to a gas supply source (not shown) so that gas at a desired pressure is sealed in the internal spaces 7 of the sealing body 6, and each internal space is filled with gas at a desired pressure. After gas is introduced into the internal cavity 7 through a valve 8, the valve 8 is closed to hermetically seal the gas within the internal cavity 7, and the connection with the gas supply source is cut off.
つぎに、前述した実施例の作用を説明する。Next, the operation of the above-described embodiment will be explained.
カッタ３の回転により掘削されてカッタフレーム２内に
取込まれた土砂はカッタフレーム２の回転に伴ない、板
体５上に乗ってスクリューコンベア４上に落下する。The earth and sand excavated by the rotation of the cutter 3 and taken into the cutter frame 2 rides on the plate body 5 and falls onto the screw conveyor 4 as the cutter frame 2 rotates.
ところで、粘着力の強い土の場合には、この土が少しず
つカッタフレーム２の内周面に付着し、次第に付着量を
多くして、フレーム２内の土砂の流れを阻害しようとす
るが、各密閉体６は下部に位置するときは土圧および水
圧とにより偏平状に変形し、また上部に位置するときは
これらの圧力が減少し膨張する。By the way, in the case of highly adhesive soil, this soil adheres little by little to the inner circumferential surface of the cutter frame 2 and gradually increases the amount of adhesion, attempting to obstruct the flow of soil within the frame 2. When each sealing body 6 is located at the bottom, it is deformed into a flat shape by earth pressure and water pressure, and when it is located at the top, these pressures are reduced and the sealing body 6 expands.
更に、各密閉体６は封入気体の弾性力により下部におい
て土砂を持ち上げようとし、上部においては土砂を強制
的に落す力を発生する。Further, each sealing body 6 tries to lift up the earth and sand at the lower part by the elastic force of the enclosed gas, and generates a force at the upper part to forcibly drop the earth and sand.
従って、各密閉体６はカッタフレーム２の回転に応じて
膨張、収縮を繰返し、常に土砂に運動（特に引張力）を
与えるため、カッタフレーム２の内周面への土砂の付着
を防止することができる。Therefore, each sealing body 6 repeatedly expands and contracts in accordance with the rotation of the cutter frame 2, and constantly applies motion (particularly tensile force) to the earth and sand, thereby preventing the earth and sand from adhering to the inner circumferential surface of the cutter frame 2. Can be done.
第４図は本考案の第２実施例を示すのであり、前述した
密閉体６と同じく気体の封入された内部空所１０を備え
ている可撓性材料からなるチューブ状の密閉体９が示さ
れている。FIG. 4 shows a second embodiment of the present invention, which shows a tubular sealing body 9 made of a flexible material and having an internal space 10 filled with gas, similar to the sealing body 6 described above. has been done.
このような密閉体９をカッタフレーム２の内周面のほは
゛全域に多数取付ければ、前述した実施例と同様の作用
が得られる。If a large number of such sealing bodies 9 are attached to the entire inner circumferential surface of the cutter frame 2, the same effect as in the embodiment described above can be obtained.
更に密閉体の形状を球状に形威し、カッタフレーム２の
内周面のほぼ全域に多数配設してもよい。Furthermore, the shape of the sealing bodies may be spherical, and a large number of them may be arranged over almost the entire inner circumferential surface of the cutter frame 2.
本考案に係るシールド掘進機等の土砂付着防止装置は、
前述したように、土砂が付着するような回転体の内周面
に多数の密閉体が取付けられているので、この密閉体の
膨張、収縮の繰返しにより土砂の付着は未然に防止され
ると共にスクリューコンベアに土砂を強制的に移送する
ことができ、がっカッタ内に充填された土砂に過度の圧
縮力を与えないという優れた効果を奏する。The earth and sand adhesion prevention device for shield tunneling machines etc. according to the present invention is
As mentioned above, a large number of sealing bodies are attached to the inner circumferential surface of the rotating body, where dirt and sand can adhere, so the repeated expansion and contraction of these sealing bodies prevents sand and dirt from adhering to the screw. The earth and sand can be forcibly transferred to the conveyor, and an excellent effect is achieved in that excessive compressive force is not applied to the earth and sand filled in the cutter.
第１図は本考案に係るシールド掘進機等の土砂付着防止
装置の第１実施例を示す説明図、第２図は第１図の■Ｉ
−ＩＩ線による断面図、第３図は第１図のＩＩＩ−ＩＩ
Ｉ線による断面図、第４図は本考案に係るシールド掘進
機等の土砂付着防止装置の第２実施例を示す要部の説明
図である。
１・・・・・・シールドフレーム、２・・・・・・カッ
タフレーム、３・・・・・・カッタ、４・・・・・・ス
クリューコンベア、６・・・・・・密閉体、９・・・・
・・密閉体。Figure 1 is an explanatory diagram showing the first embodiment of the earth and sand adhesion prevention device for shield excavators, etc. according to the present invention, and Figure 2 is
- II cross-sectional view, Figure 3 is III-II in Figure 1.
FIG. 4, a sectional view taken along line I, is an explanatory view of the main parts of a second embodiment of the earth and sand adhesion prevention device for a shield excavator or the like according to the present invention. 1... Shield frame, 2... Cutter frame, 3... Cutter, 4... Screw conveyor, 6... Sealed body, 9・・・・・・
... Sealed body.
Claims (1)
閉体を取付け、これらの密閉体の内部には気体が封入さ
れているシールド掘進機の土砂付着防止装置。A sediment adhesion prevention device for a shield excavator, in which a number of sealing bodies made of flexible material are attached to the inner peripheral surface of a cutter frame, and gas is sealed inside these sealing bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6867278U JPS5923116Y2 (en) | 1978-05-22 | 1978-05-22 | Sediment adhesion prevention device for shield excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6867278U JPS5923116Y2 (en) | 1978-05-22 | 1978-05-22 | Sediment adhesion prevention device for shield excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54170034U JPS54170034U (en) | 1979-12-01 |
| JPS5923116Y2 true JPS5923116Y2 (en) | 1984-07-10 |
Family
ID=28976766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6867278U Expired JPS5923116Y2 (en) | 1978-05-22 | 1978-05-22 | Sediment adhesion prevention device for shield excavator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5923116Y2 (en) |
-
1978
- 1978-05-22 JP JP6867278U patent/JPS5923116Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54170034U (en) | 1979-12-01 |
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