JPH0473085U - - Google Patents
Info
- Publication number
- JPH0473085U JPH0473085U JP11592990U JP11592990U JPH0473085U JP H0473085 U JPH0473085 U JP H0473085U JP 11592990 U JP11592990 U JP 11592990U JP 11592990 U JP11592990 U JP 11592990U JP H0473085 U JPH0473085 U JP H0473085U
- Authority
- JP
- Japan
- Prior art keywords
- front body
- shield
- excavation
- circumferential wall
- vicinity
- 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.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 claims 3
- 230000037431 insertion Effects 0.000 claims 3
- 238000003780 insertion Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Sealing Devices (AREA)
Description
第１図は本考案の一実施例を示す縦断面図、第
２図は第１図の要部拡大断面図、第３図は本考案
の他の実施例を示す図、第４図並びに第５図は従
来例を示す縦断面図である。
図中、３は前胴、３ａは内周壁、５は後胴、５
ａは外周壁、８は摺動部、１１は弾性シールブロ
ツク、１１ａは先端部分、１３，１４はスクレー
パ部材、２０はリツプ部である。
FIG. 1 is a longitudinal cross-sectional view showing one embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view of the main part of FIG. 1, FIG. 3 is a diagram showing another embodiment of the present invention, and FIG. FIG. 5 is a longitudinal sectional view showing a conventional example. In the figure, 3 is the front body, 3a is the inner peripheral wall, 5 is the rear body, 5
a is an outer peripheral wall, 8 is a sliding portion, 11 is an elastic seal block, 11a is a tip portion, 13 and 14 are scraper members, and 20 is a lip portion.
Claims (1)
部を有する前胴と掘進方向後方に位置され掘削さ
れたトンネル内にセグメントを組み立てる作業領
域を形成する後胴とに分割形成し、前胴の後部開
口部よりその内部に上記後胴の先端部を縮径させ
て所定の長さ嵌入させ、推進ジヤツキ等により前
胴内周壁と後胴の嵌入部相互を摺動させてシール
ド本体を伸縮させつつ推進させるようにした同時
推進シールド掘進機において、上記前胴の内周部
に、上記嵌入部の外周壁近傍より所定の角度傾斜
して掘進方向後方に延出されその先端部分が上記
後胴の嵌入部の外周壁に弾接するよう形成された
リツプ部を有する弾性シールブロツクを前胴の軸
方向に所定の間隔を隔てて多段に設けると共に、
上記前胴の開口部端縁部に、上記嵌入部の外周壁
に弾接してこれに付着する土砂等を排除するスク
レーパ部材を設けたことを特徴とする同時推進シ
ールド掘進機の摺動部シール構造。 The shield body is divided into a front body located at the front in the direction of excavation and having a cutter part, and a rear body located at the rear in the direction of excavation and forming a work area for assembling segments in the excavated tunnel, and the rear opening of the front body Then, the diameter of the tip of the rear body is reduced and the tip part of the rear body is inserted into the shield to a predetermined length, and the inner circumferential wall of the front body and the fitting part of the rear body are slid against each other using a propulsion jack, etc., and the shield body is expanded and contracted and propelled. In the simultaneous propulsion shield excavator, the inner circumferential portion of the front body extends rearward in the excavation direction at a predetermined angle from the vicinity of the outer circumferential wall of the insertion portion, and the distal end portion thereof extends backward in the digging direction from the vicinity of the outer peripheral wall of the insertion portion. Elastic seal blocks having lip portions formed to come into elastic contact with the outer peripheral wall of the front body are provided in multiple stages at predetermined intervals in the axial direction of the front body, and
A sliding part seal for a simultaneous propulsion shield excavator, characterized in that a scraper member is provided on the edge of the opening of the front body for elastically contacting the outer circumferential wall of the insertion part to remove dirt and the like adhering thereto. structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11592990U JPH0473085U (en) | 1990-11-06 | 1990-11-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11592990U JPH0473085U (en) | 1990-11-06 | 1990-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0473085U true JPH0473085U (en) | 1992-06-26 |
Family
ID=31863739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11592990U Pending JPH0473085U (en) | 1990-11-06 | 1990-11-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0473085U (en) |
-
1990
- 1990-11-06 JP JP11592990U patent/JPH0473085U/ja active Pending
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