JPH0336087U - - Google Patents
Info
- Publication number
- JPH0336087U JPH0336087U JP9383389U JP9383389U JPH0336087U JP H0336087 U JPH0336087 U JP H0336087U JP 9383389 U JP9383389 U JP 9383389U JP 9383389 U JP9383389 U JP 9383389U JP H0336087 U JPH0336087 U JP H0336087U
- Authority
- JP
- Japan
- Prior art keywords
- shield
- thrust
- folded
- front body
- divided
- 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
- 238000009412 basement excavation Methods 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 claims 2
- 239000011295 pitch Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
第1図は本考案の1実施例を示すものでシール
ド本体の分割部を後胴側から見た図、第2図は第
1図の−断面図である。第3図は従来の一般
的な中折れシールドの側面を示す構成説明図、第
4図は前胴と後胴とを連結する中折れジヤツキを
示す図、第5図は従来の中折れ角保持の第1の構
成例を示す図、第6図は第5図の−断面図、
第7図は従来の中折れ角保持の第2の構成例を示
す図、第8図は第7図の−断面図である。
1……シールド本体、1a……前胴、1b……
後胴、3……シールドジヤツキ、5……中折れジ
ヤツキ、10……ねじ装置、15……推力受け。
FIG. 1 shows one embodiment of the present invention, and is a view of the divided portion of the shield main body as seen from the rear trunk side, and FIG. 2 is a cross-sectional view taken from FIG. 1. Fig. 3 is a configuration explanatory diagram showing the side surface of a conventional general folding shield, Fig. 4 is a diagram showing a folding jack connecting the front and rear shells, and Fig. 5 is a conventional folding angle retention diagram. 6 is a cross-sectional view of FIG. 5,
FIG. 7 is a diagram showing a second configuration example of conventional bending angle maintenance, and FIG. 8 is a sectional view taken along the line -- in FIG. 7. 1... Shield body, 1a... Front body, 1b...
Rear body, 3... Shield jack, 5... Center bending jack, 10... Screw device, 15... Thrust receiver.
Claims (1)
シールド本体分割部の内側周辺部に配設され該分
割部を連結するとともに所定の角度に中折れさせ
てシールドの掘進方向を変換させる複数の中折れ
ジヤツキと、前記後胴内の周辺部にほぼ等ピツチ
に隣接して配設され掘進時の推力を発生する複数
のシールドジヤツキとを備えた曲線施工可能な中
折れシールドにおいて、前記隣接するシールドジ
ヤツキのほぼ中間位置に配設され掘進時のシール
ドジヤツキの推力を前胴に常に押圧状態で伝達す
る長さ調整可能な複数のねじ装置と、該ねじ装置
により伝達される推力を直接受ける前記前胴に固
設された推力受けと、を設ける構成にしたことを
特徴とする中折れシールド。 A shield body divided into a front body and a rear body, and a plurality of shields arranged around the inner peripheral part of the shield body divided part to connect the divided parts and bent in the middle at a predetermined angle to change the digging direction of the shield. In the folded shield which can be constructed in a curved line, the folded shield includes a folded jack and a plurality of shield jacks that are arranged adjacent to each other at approximately equal pitches in the peripheral part of the rear shell and generate thrust during excavation. A plurality of screw devices whose lengths are adjustable, which are disposed approximately midway between adjacent shield jacks and transmit the thrust of the shield jack during excavation to the front body in a constantly pressed state, and the thrust transmitted by the screw devices. a thrust receiver fixedly installed on the front body to directly receive the force.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9383389U JPH0336087U (en) | 1989-08-11 | 1989-08-11 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9383389U JPH0336087U (en) | 1989-08-11 | 1989-08-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0336087U true JPH0336087U (en) | 1991-04-09 |
Family
ID=31643194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9383389U Pending JPH0336087U (en) | 1989-08-11 | 1989-08-11 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0336087U (en) |
-
1989
- 1989-08-11 JP JP9383389U patent/JPH0336087U/ja active Pending
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