JPS6136630Y2 - - Google Patents
Info
- Publication number
- JPS6136630Y2 JPS6136630Y2 JP13945681U JP13945681U JPS6136630Y2 JP S6136630 Y2 JPS6136630 Y2 JP S6136630Y2 JP 13945681 U JP13945681 U JP 13945681U JP 13945681 U JP13945681 U JP 13945681U JP S6136630 Y2 JPS6136630 Y2 JP S6136630Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure chamber
- removal device
- blade
- screw
- coiled
- 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
- 238000003756 stirring Methods 0.000 claims description 21
- 239000002689 soil Substances 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Screw Conveyors (AREA)
Description
【考案の詳細な説明】 本考案はシールド掘進機の排土装置に関する。[Detailed explanation of the idea] The present invention relates to an earth removal device for a shield excavator.
従来、シールド掘進機の排土装置としてスクリ
ユウコンベヤ式のものが使用されている。このス
クリユウコンベヤ式のものによると、第３図ａ、
ｂに示すように、スクリユウ羽根１の中心に回転
軸２が通つているため、排出可能な粗大礫の大き
さd1はケーシング３直径の約1/3程度であつた。 Conventionally, a screw conveyor type has been used as an earth removal device for a shield excavator. According to this screw conveyor type, Fig. 3a,
As shown in b, since the rotating shaft 2 passes through the center of the screw blade 1, the size d1 of the coarse gravel that can be discharged was about 1/3 of the diameter of the casing 3.
本考案は排出可能な粗大礫の大きさを少なくと
もケーシング直径の1/2以上にするもので、排出
能力の向上を図ることができるシールド掘進機の
排土装置を提供するものである。 The present invention provides an earth removal device for a shield excavator that can increase the size of the coarse gravel that can be discharged to at least 1/2 of the casing diameter, and improve the discharge capacity.
以下、本考案の一実施例を第１図及び第２図に
基づき説明する。１１はシールド本体、１２はシ
ールド本体１１前部に設けられると共に回転駆動
装置１３により回転自在にされたカツタヘツド、
１４はカツタヘツド１２内に形成された圧力室、
１５は圧力室１４内に取込まれた掘削土砂を大気
圧室１６側に排出する排土装置である。該排土装
置１５はスクリユウコンベヤ式排土装置のスクリ
ユウ羽根をコイル状に成し、且つ圧力室内に設け
られた撹拌羽根の撹拌軸を上記コイル状スクリユ
ウ羽根の内側にしかもコイル状スクリユウ羽根の
回転軸心に対して偏心した位置に設けたものであ
る。以下、詳しく説明すると、１７は先端が圧力
室１４内に開口すると共に後端に大気圧室１６内
に開口する排出口１８を有する筒状ケーシング
で、その内部略全長に亘つてコイル状スクリユウ
羽根１９が配設されている。該コイル状スクリユ
ウ羽根１９は、その後端外周に固着された回転環
２０を介して回転駆動される。即ち、回転環２０
の外周には外歯２１が設けられ、該外歯２１はピ
ニオン２２を介して回転駆動装置２３に連動連結
されている。なお、２４は回転環２０の軸受、２
５は該軸受２４の両側に配置されたシール材であ
る。そして、２６は先端に圧力室１４内を撹拌す
る撹拌羽根２７を有すると共にコイル状スクリユ
ウ羽根１９内側にしかもコイル状スクリユウ羽根
１９の回転軸心に対して偏心（本実施例では上方
に偏心）した位置で設けられた撹拌軸で、先端は
圧力室１４内に突設されたブラケツト２８により
回転可能に支持され、また後端はさや管２９を介
して筒状ケーシング１７外側に突出されて軸受３
０により回転可能に支持されると共に大歯車３１
及びピニオン３２を介して回転駆動装置３３に連
動連結されている。なお、上記撹拌羽根２７の形
状は任意でよく、圧力室１４内に取込まれた掘削
土砂と、注入管３４より注入された塑性流動化改
良材とを混合しやすい構造にされる。 An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. 11 is a shield main body, 12 is a cutter head provided at the front of the shield main body 11 and made rotatable by a rotation drive device 13;
14 is a pressure chamber formed within the cutter head 12;
Reference numeral 15 denotes an earth removal device that discharges the excavated earth and sand taken into the pressure chamber 14 to the atmospheric pressure chamber 16 side. The soil removal device 15 has screw blades of a screw conveyor type soil removal device formed into a coil shape, and the stirring shaft of the stirring blade provided in the pressure chamber is located inside the coiled screw blade. It is provided at a position eccentric to the rotation axis. To explain in detail below, 17 is a cylindrical casing having a tip opening into the pressure chamber 14 and a rear end having a discharge port 18 opening into the atmospheric pressure chamber 16. 19 are arranged. The coiled screw blade 19 is rotationally driven via a rotating ring 20 fixed to the outer periphery of its rear end. That is, the rotating ring 20
External teeth 21 are provided on the outer periphery of the motor, and the external teeth 21 are interlocked and connected to a rotational drive device 23 via a pinion 22 . Note that 24 is a bearing of the rotating ring 20;
5 is a sealing material arranged on both sides of the bearing 24. 26 has a stirring blade 27 at its tip for stirring the inside of the pressure chamber 14, and is located inside the coiled screw blade 19 and eccentrically (in this embodiment, upwardly eccentric) with respect to the rotation axis of the coiled screw blade 19. The stirring shaft is provided at a position, and its tip is rotatably supported by a bracket 28 protruding into the pressure chamber 14, and its rear end is protruded outside the cylindrical casing 17 via a sheath pipe 29 and is connected to a bearing 3.
0 rotatably supported by the large gear 31
The rotary drive device 33 is interlocked with the rotary drive device 33 via the pinion 32 and the pinion 32 . Note that the stirring blade 27 may have any shape, and is designed to easily mix the excavated soil taken into the pressure chamber 14 and the plastic fluidization improvement material injected from the injection pipe 34.
上記構成によると、圧力室１４内に取込まれた
掘削土砂は撹拌羽根２７によつて塑性流動化材料
（例えば泥漿）と混合撹拌された後、コイル状ス
クリユウ羽根１９によつて筒状ケーシング１７後
部の空間部３５に送られ、ここで地下水圧と崩壊
土圧に対抗できるサンドプラグが形成されそして
排出口１８のゲート３６が開かれて掘削土砂は排
出コンベア（図示せず）上に排出される。ところ
で、コイル状スクリユウ羽根１９により掘削土砂
を排出する場合、撹拌軸２６が上方に偏心させら
れているので、第２図ａ、ｂに示すように、筒状
ケーシング１７内径の1/2程度の大きさd2を有す
る礫でも排出することができる。また、コイル状
スクリユウ羽根１９と撹拌軸２６との回転数及び
回転方向は任意に選択でき、例えば相対速度を有
せしめた場合、従来のスクリユウ羽根と撹拌軸と
が一体化されたものに比べて、掘削土砂の付着を
減少させることができる。更に、コイル状スクリ
ユウ羽根１９の内周を、撹拌軸２６により支持す
るようにすれば、コイル状スクリユウ羽根１９の
圧力室１４側外周の摩耗を減らすこともできる。 According to the above configuration, the excavated soil taken into the pressure chamber 14 is mixed and stirred with a plastic fluidized material (for example, slurry) by the stirring blade 27, and then is moved to the cylindrical casing 17 by the coiled screw blade 19. The excavated soil is sent to the rear space 35, where a sand plug capable of resisting groundwater pressure and collapsed soil pressure is formed, and the gate 36 of the discharge port 18 is opened to discharge the excavated soil onto a discharge conveyor (not shown). Ru. By the way, when excavated soil is discharged by the coiled screw blade 19, since the stirring shaft 26 is eccentrically upward, as shown in FIGS. Even gravel having a size d 2 can be discharged. Further, the rotational speed and rotation direction of the coiled screw blade 19 and the stirring shaft 26 can be arbitrarily selected. For example, when they have a relative speed, compared to the conventional screw blade and stirring shaft integrated together, , can reduce the adhesion of excavated soil. Furthermore, if the inner periphery of the coiled screw blade 19 is supported by the stirring shaft 26, wear on the outer periphery of the coiled screw blade 19 on the pressure chamber 14 side can be reduced.
ところで、第１図仮想線で示すように、撹拌軸
２６を中空にすると共にその後端部にロータリジ
ヨイント３７を介して塑性流動化材料の注入管３
８を接続して、ここから圧力室１４内に塑性流動
化材料を注入するようにしてもよい。 By the way, as shown by the imaginary line in FIG. 1, the stirring shaft 26 is made hollow, and an injection pipe 3 for plastic fluidizing material is inserted through a rotary joint 37 at its rear end.
8 may be connected to inject the plastic fluidized material into the pressure chamber 14 from there.
以上のように、本考案のシールド掘進機の排土
装置によれば、スクリユウコンベヤ式排土装置の
スクリユウ羽根をコイル状に成すと共に撹拌軸を
コイル状スクリユウ羽根の内側にしかもコイル状
スクリユウ羽根の回転軸心に対して偏心した位置
に設けたので、従来のものに比べて大きい礫を排
出することができ、またコイル状スクリユウ羽根
と撹拌軸の回転速度及び回転方向を異ならせるこ
とができるので、例えばスクリユウ羽根と撹拌軸
とが一体化されたものに比べて、掘削土砂がコイ
ル状スクリユウ羽根及び撹拌軸に付着しにくくな
る。 As described above, according to the earth removal device for a shield excavator of the present invention, the screw blades of the screw conveyor type earth removal device are formed into a coil shape, and the stirring shaft is placed inside the coiled screw blade. Because it is located eccentrically with respect to the rotation axis of the stirrer, it is possible to discharge larger gravel than conventional ones, and the rotation speed and direction of the coiled screw blade and stirring shaft can be made different. Therefore, excavated soil is less likely to adhere to the coiled screw blades and the stirring shaft, compared to, for example, a case where the screw blades and the stirring shaft are integrated.
第１図は本考案の一実施例を示す縦断面図、第
２図は同要部を示すもので、ａは縦断面図、ｂは
ａの−矢視断面図、第３図は従来例を示すも
ので、ａは縦断面図、ｂはａの−矢視断面図
である。
１４……圧力室、１５……排土装置、１６……
大気圧室、１７……筒状ケーシング、１９……コ
イル状スクリユウ羽根、２０……回転環、２６…
…撹拌軸、２７……撹拌羽根。
Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 2 shows the main parts thereof, where a is a longitudinal sectional view, b is a sectional view taken along the - arrow of a, and Fig. 3 is a conventional example. , in which a is a longitudinal cross-sectional view and b is a cross-sectional view taken in the direction of a. 14...Pressure chamber, 15...Earth removal device, 16...
Atmospheric pressure chamber, 17... Cylindrical casing, 19... Coiled screw blade, 20... Rotating ring, 26...
... Stirring shaft, 27... Stirring blade.
Claims (1)
砂を排出するスクリユウコンベヤ式排土装置のス
クリユウ羽根をコイル状に成し、且つ上記排土装
置の筒状ケーシング内を挿通されると共に圧力室
内を撹拌する撹拌羽根を先端に有する撹拌軸を、
上記コイル状スクリユウ羽根の内側にしかもコイ
ル状スクリユウ羽根の回転軸心に対して偏心した
位置に設けたことを特徴とするシールド掘進機の
排土装置。 The screw blades of a screw conveyor-type soil removal device for discharging excavated soil from the pressure chamber of the shield excavator to the atmospheric pressure chamber are formed into a coil shape, and the screw blades are inserted into the cylindrical casing of the soil removal device and are inserted into the pressure chamber. A stirring shaft with a stirring blade at the tip that stirs the
An earth removal device for a shield excavator, characterized in that it is provided inside the coiled screw blade and at a position eccentric to the rotation axis of the coiled screw blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13945681U JPS5845798U (en) | 1981-09-18 | 1981-09-18 | Earth removal device for shield excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13945681U JPS5845798U (en) | 1981-09-18 | 1981-09-18 | Earth removal device for shield excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5845798U JPS5845798U (en) | 1983-03-28 |
| JPS6136630Y2 true JPS6136630Y2 (en) | 1986-10-23 |
Family
ID=29932645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13945681U Granted JPS5845798U (en) | 1981-09-18 | 1981-09-18 | Earth removal device for shield excavator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5845798U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013015236A (en) * | 2011-06-30 | 2013-01-24 | Mogami Ranen Kk | Automatic charging machine for granular fuel, and granular fuel combustion device with the same incorporated therein |
-
1981
- 1981-09-18 JP JP13945681U patent/JPS5845798U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013015236A (en) * | 2011-06-30 | 2013-01-24 | Mogami Ranen Kk | Automatic charging machine for granular fuel, and granular fuel combustion device with the same incorporated therein |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5845798U (en) | 1983-03-28 |
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