JPS6214237Y2 - - Google Patents
Info
- Publication number
- JPS6214237Y2 JPS6214237Y2 JP1981012289U JP1228981U JPS6214237Y2 JP S6214237 Y2 JPS6214237 Y2 JP S6214237Y2 JP 1981012289 U JP1981012289 U JP 1981012289U JP 1228981 U JP1228981 U JP 1228981U JP S6214237 Y2 JPS6214237 Y2 JP S6214237Y2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- shaped support
- segment
- skin plate
- circumferential surface
- 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
- 238000007789 sealing Methods 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000428 dust Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Description
【考案の詳細な説明】
産業上の利用分野
本考案はシールド掘削機のスキンプレートとセ
グメントの間に介装され、スキンプレートとセグ
メントの間をシールするテールシール装置に関す
る。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a tail seal device that is interposed between a skin plate and a segment of a shield excavator and seals between the skin plate and the segment.
従来技術
現在、大都市を中心として、中小都市までもイ
ンフラストラクチヤーを盛んに整備している。特
に、大都市において、インフラストラクチヤーの
大きな部分を占める地下埋設物は飽和に近い状況
にあり、将来の増設にはシールド工法による都市
トンネル（地下鉄、上下水道、電力、通信回線用
など）が地下深く設けられるものと予測され、そ
れに対処できるシールド掘削機の開発が望まれて
いる。Prior Art Currently, infrastructure is being actively developed not only in large cities but also in small and medium-sized cities. In particular, in large cities, underground structures, which make up a large portion of the infrastructure, are nearing saturation, and future expansion will require underground urban tunnels (for subways, water and sewage systems, power, communication lines, etc.) using shield construction methods. It is predicted that the excavation will be carried out at a deep depth, and there is a desire to develop a shield excavator that can cope with this problem.
ところで、従来のシールド掘削機のテールシー
ル装置は多くの場合、ゴム質のリング状パツキン
グを２ないし３列を装備し、セグメントとシール
ド掘削機の間から浸入する地下水を防止してい
る。 By the way, conventional tail seal devices for shield excavators are often equipped with two or three rows of rubber ring-shaped packing to prevent groundwater from entering between the segments and the shield excavator.
実績では2.0ない2.5Kg／cm2の水圧下でのシール
ド工事が施工され、この程度の水圧であれば従来
型式のテールシールでも耐えられるが、実際の施
工では寿命的に問題があり、1.0Kg／cm2を越える
シールド工事では何度からの交換を要している。
さらに大深度となり水圧が10Kg／cm2あるいはそれ
以上になると、従来型式のテールシールでは止水
が困難である。 According to actual results, shield work was carried out under water pressure of 2.5Kg/cm 2 (not 2.0Kg), and conventional tail seals can withstand this level of water pressure, but in actual construction, there is a problem with the lifespan, and 1.0Kg Shield work that exceeds / cm2 requires replacement several times.
At even greater depths, where the water pressure reaches 10 kg/cm 2 or more, it is difficult to stop the water with conventional tail seals.
そのために、例えば特開昭50−6130号公報に
は、中空ゴムチユーブ環を支持体に設け、その支
持体の反対側にパツキンを設け、もつて高深度で
もテールシールを充分に行う技術が開示されてい
る。しかしながら、かかる公知の技術ではスキン
プレートに設けたジヤツキによつて支持体を移動
させるものであるから、移動中にこすれを生じ、
寿命が短くなる。そのために水深が深く圧力の高
い場合には、高い圧力のシールを必要とする場合
は不適であり、特に裏込注入後に空気を抜いてジ
ヤツキで移動させ、その後にセグメントを組立て
て空気を入れてシールするので、セグメント組立
中は漏洩が生ずるおそれがある。 For this purpose, for example, Japanese Patent Application Laid-Open No. 50-6130 discloses a technique in which a hollow rubber tube ring is provided on a support and a seal is provided on the opposite side of the support to achieve a sufficient tail seal even at high depths. ing. However, in this known technique, since the support is moved by a jack provided on the skin plate, rubbing occurs during movement.
Life expectancy will be shortened. Therefore, if the water is deep and the pressure is high, it is not suitable if a high-pressure seal is required.Especially, after backfill injection, air is removed and moved with jacks, and then the segments are assembled and air is added. Because of the seal, leakage may occur during segment assembly.
考案の目的
したがつて、本考案の目的は、セグメント組立
中でもシール作用が完全に行うことのできるシー
ルド掘削機におけるテールシール装置を提供する
にある。OBJECT OF THE INVENTION Accordingly, an object of the present invention is to provide a tail seal device for a shield excavator that can perform a complete sealing action even during segment assembly.
考案の構成
本考案によれば、シールド掘削機のスキンプレ
ートとセグメントの間に介装され、スキンプレー
トとセグメントの間をシールするテールシール装
置において、シール部材を支持するリング状支持
体を備え、そのリング状支持体の外周面にはスキ
ンプレートの内周面に圧接するシール部材が複数
個設けられ、またリング状支持体の内周面には膨
脹体によつてセグメントの外周面に圧接するシー
ル部材が複数個装着されており、かつシール部材
を装着したリング状支持体は着脱可能な連結金具
を介してシールド掘削機を推進するシールドジヤ
ツキに連結され、その膨脹体に圧縮空気を供給す
る管路が配管されている。According to the present invention, a tail seal device is provided between a skin plate and a segment of a shield excavator and seals between the skin plate and the segment, and includes a ring-shaped support that supports a seal member. A plurality of sealing members are provided on the outer circumferential surface of the ring-shaped support body to press against the inner circumferential surface of the skin plate, and a plurality of seal members are provided on the inner circumferential surface of the ring-shaped support body to press against the outer circumferential surface of the segment by an expansion body. A plurality of seal members are attached, and the ring-shaped support body with the seal members attached is connected to a shield jack that propels the shield excavator via a detachable connecting fitting, and supplies compressed air to the inflatable body. There is a conduit installed.
考案の作用効果
したがつて、配管から膨脹体に圧縮空気を送る
ことによつてリング状支持体は内外周面共にシー
ル部材によつてセグメントおよびスキンプレート
の間を密封し、10Kg／cm2以上の圧力に充分に抗す
ることができる。そしてシールド機械の移動中
は、圧縮空気を入れた状態で、スキンプレートは
リング状支持体の外周面のシール部材と摺接した
状態で移動する。そのスキンプレートは通常鋼板
を用いているので、外周面のシール部材はあまり
傷まない。次いでセグメントを組立後脱着可能な
連結金具を用いてリング状支持体を連結して、膨
脹体を収縮し、引張りよせてから再び膨脹体をふ
くらましてシールを行う。Effects of the invention Therefore, by sending compressed air from the piping to the inflatable body, the ring-shaped support is sealed between the segment and the skin plate by the sealing member on both the inner and outer circumferential surfaces, and the ring-shaped support is sealed between the segments and the skin plate at a rate of 10 kg/cm 2 or more. can fully withstand the pressure of While the shield machine is moving, the skin plate moves while being in sliding contact with the sealing member on the outer peripheral surface of the ring-shaped support with compressed air being supplied. Since the skin plate usually uses a steel plate, the sealing member on the outer peripheral surface is not damaged much. Next, after assembling the segments, the ring-shaped supports are connected using removable connecting fittings, the inflatable body is deflated, and after being pulled together, the inflatable body is inflated again for sealing.
このようにリング状支持体がセグメントの外周
面を移動させるときは連結金具によつて行い、そ
の移動時間は短いので、漏洩の問題が生ぜず、ま
た表面の粗いセグメント上を摺動するときは膨脹
体を収縮させればよいので、リング状支持体の内
周面のシール部材は損傷しない。また膨脹体はリ
ング状支持体の内周面でセグメントの外周面と圧
接するシール部材を押圧するので、膨脹体はセグ
メントを摺接せず、寿命が長い。このように着脱
可能な連結金具を用いることによつて、シール作
業を行わない期間はわずかであり、しかもセグメ
ントの段差があつても、移動に支障がなく、シー
ルド掘削機の停止時のわずかな間だけシール作用
を行わないので、高圧力下においてもすぐれたシ
ール性を確保できる。 In this way, when the ring-shaped support moves on the outer circumferential surface of the segment, it is done using a connecting fitting, and since the movement time is short, there is no problem of leakage, and when sliding on a segment with a rough surface, Since it is only necessary to deflate the inflatable body, the sealing member on the inner circumferential surface of the ring-shaped support is not damaged. In addition, since the expansion body presses the sealing member that is in pressure contact with the outer circumference of the segment with the inner circumference of the ring-shaped support, the expansion body does not come into sliding contact with the segment, and the service life is long. By using removable coupling fittings in this way, there is only a short period of time when sealing work is not performed, and even if there is a step in the segment, there is no problem with movement, and there is no problem when the shield excavator is stopped. Since no sealing action is performed during this period, excellent sealing performance can be ensured even under high pressure.
実施例
以下、図面を参照し本考案の実施例を説明す
る。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.
シールド掘削機のスキンプレート１とセグメン
ト２の間には全体を３で示すテールシール装置が
介装されており、このテールシール装置３は、シ
ール部材を支持するリング状支持体４を備えてお
り、このリング状支持体４の外周面にはスキンプ
レート１の内周面に圧接するシール部材、すなわ
ちゴム材等よりなるオイルシール５，５、ダスト
シール６が交換可能に装着されている。またリン
グ状支持体４の内周面にはセグメント２の外周面
に圧接するシール部材すなわちゴム材質よりなる
リツプ式のシール部材７，７，７が交換可能に装
着されており、このリツプ式シール部材７，７，
７は膨脹体例えばエアーバツグ８，８を膨脹させ
るとによりセグメント２の外周面に強く圧接され
る。エアーバツグ８，８に圧縮空気を供給する管
路９が配管されている。リング状支持体４は脱着
可能な連結金具１０を介してシールド掘削機を推
進させるシールドジヤツキ１１のジヤツキシユウ
１２にバランスよく数箇所連結される。 A tail seal device, generally indicated by 3, is interposed between the skin plate 1 and the segment 2 of the shield excavator, and the tail seal device 3 includes a ring-shaped support 4 for supporting a seal member. On the outer circumferential surface of the ring-shaped support 4, sealing members that press against the inner circumferential surface of the skin plate 1, namely oil seals 5, 5 and a dust seal 6 made of rubber or the like, are replaceably mounted. Further, on the inner circumferential surface of the ring-shaped support 4, seal members 7, 7, 7, made of a rubber material, which press against the outer circumferential surface of the segments 2, are replaceably attached. Member 7, 7,
7 is strongly pressed against the outer peripheral surface of the segment 2 by inflating an inflatable body such as air bags 8, 8. A conduit 9 for supplying compressed air to the air bags 8, 8 is provided. The ring-shaped support 4 is connected in several well-balanced locations to a jack 12 of a shield jack 11 that propels the shield excavator through detachable connecting fittings 10.
作動に際し、シールド掘削機の移動中において
は、エアーバツグ８，８に空気圧をかけて膨脹さ
せ、シール部材７，７，７をセグメント２の外周
面に充分圧接し、テールシール装置３を固定して
おいて、シールドジヤツキ１１を作動させてシー
ルド掘削機を移動させる。この時、スキンプレー
ト１はオイルシール５，５およびダストシール６
に摺接して移動する。シールド掘削機が所定の距
離、例えば約900mm移動後、シールドジヤツキ１
１のジヤツキシユウ１２を脱着可能な連結金具１
０によつてテールシール装置３のリング状支持体
４に連結し、テールシール装置３を所定の距離、
例えば約900mm移動させる。この時、エアーバツ
グ８，８の空気は抜く。 During operation, while the shield excavator is moving, air pressure is applied to the air bags 8, 8 to inflate them, the seal members 7, 7, 7 are brought into sufficient pressure contact with the outer peripheral surface of the segment 2, and the tail seal device 3 is fixed. Then, the shield jack 11 is operated to move the shield excavator. At this time, the skin plate 1 is attached to the oil seals 5, 5 and the dust seal 6.
Move by sliding in contact with. After the shield excavator has moved a predetermined distance, for example about 900mm, the shield excavator 1
Connecting fitting 1 that can detach and attach the jack 12 of 1
0 to the ring-shaped support 4 of the tail seal device 3, and the tail seal device 3 is connected to the ring-shaped support 4 by a predetermined distance.
For example, move it about 900mm. At this time, let the air out of air bags 8,8.
まとめ
以上説明したように本考案にかかるテールシー
ルを分離したため、シールド掘削機の移動時と停
止時にシールを分離したため、シール部材の反転
の問題、移動時に起こり易い段差への追従の問題
を解消することができ、高圧力下において確実な
シール性を確保することができる。Summary As explained above, since the tail seal according to the present invention is separated, the seal is separated when the shield excavator is moving and when it is stopped, which solves the problem of reversing the seal member and the problem of following steps that tend to occur when moving. It is possible to ensure reliable sealing performance under high pressure.
図面は本考案の実施例を示すテールシール装置
の縦断面図である。
１……スキンプレート、２……セグメント、３
……テールシール装置、４……リング状支持体、
５……オイルシール、６……ダストシール、７…
…リツプ式シール部材、８……エアーバツグ、９
……圧力空気供給管、１０……連結金具、１１…
…シールドジヤツキ、１２……ジヤツキシユウ。
The drawing is a longitudinal sectional view of a tail seal device showing an embodiment of the present invention. 1...Skin plate, 2...Segment, 3
... Tail seal device, 4 ... Ring-shaped support,
5...Oil seal, 6...Dust seal, 7...
... Lip type seal member, 8 ... Air bag, 9
...Pressure air supply pipe, 10...Connection fitting, 11...
...Shield Jyatsuki, 12...Jyatsuki Yuu.
Claims (1)
の間に介装され、スキンプレートとセグメントの
間をシールするテールシール装置において、シー
ル部材を支持するリング状支持体を備え、そのリ
ング状支持体の外周面にはスキンプレートの内周
面に圧接するシール部材が複数個設けられ、また
リング状支持体の内周面には膨脹体によつてセグ
メントの外周面に圧接するシール部材が複数個装
着されており、かつシール部材を装着したリング
状支持体は着脱可能な連結金具を介してシールド
掘削機を推進するシールドジヤツキに連結され、
その膨脹体に圧縮空気を供給する管路が配管され
ていることを特徴とするシールド掘削機における
テールシール装置。 A tail seal device that is interposed between a skin plate and a segment of a shield excavator and seals between the skin plate and the segment includes a ring-shaped support that supports a seal member, and a ring-shaped support on the outer peripheral surface of the ring-shaped support. A plurality of sealing members are provided in pressure contact with the inner circumferential surface of the skin plate, and a plurality of sealing members are attached to the inner circumferential surface of the ring-shaped support body in pressure contact with the outer circumferential surface of the segment by an expansion body. , and the ring-shaped support mounted with the sealing member is connected to a shield jack that propels the shield excavator via a detachable connecting fitting,
A tail seal device for a shield excavator, characterized in that a conduit for supplying compressed air to the expansion body is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981012289U JPS6214237Y2 (en) | 1981-02-02 | 1981-02-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981012289U JPS6214237Y2 (en) | 1981-02-02 | 1981-02-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57128697U JPS57128697U (en) | 1982-08-11 |
| JPS6214237Y2 true JPS6214237Y2 (en) | 1987-04-11 |
Family
ID=29810403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981012289U Expired JPS6214237Y2 (en) | 1981-02-02 | 1981-02-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6214237Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0303775B1 (en) * | 1987-08-13 | 1992-03-04 | Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann | Method for making a tunnel by using a driving shield |
| JPH0630958Y2 (en) * | 1988-10-07 | 1994-08-22 | 川崎重工業株式会社 | Emergency water seal device for shield machine |
| JP4541266B2 (en) * | 2005-09-16 | 2010-09-08 | 三菱重工メカトロシステムズ株式会社 | Tunnel excavator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS506130A (en) * | 1973-05-18 | 1975-01-22 |
-
1981
- 1981-02-02 JP JP1981012289U patent/JPS6214237Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS506130A (en) * | 1973-05-18 | 1975-01-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57128697U (en) | 1982-08-11 |
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