JPS6255690U - - Google Patents
Info
- Publication number
- JPS6255690U JPS6255690U JP14351685U JP14351685U JPS6255690U JP S6255690 U JPS6255690 U JP S6255690U JP 14351685 U JP14351685 U JP 14351685U JP 14351685 U JP14351685 U JP 14351685U JP S6255690 U JPS6255690 U JP S6255690U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- small
- outer periphery
- tunneling machine
- segments
- 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.)
- Granted
Links
- 230000002265 prevention Effects 0.000 claims description 2
- 230000005641 tunneling Effects 0.000 claims 2
- 210000000078 claw Anatomy 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
第１図は本考案の実施例の説明図、第２図は本
考案の作動説明図である。第３図および第４図は
従来例の説明図である。
１……シールド本体、２，２′……３分割セグ
メント、２ａ……溝、３……シールドジヤツキ、
４……プレスリング、５……レバー、６……支持
部材、７……ピン、８……ばね、Ａ……後退防止
装置。
FIG. 1 is an explanatory diagram of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the operation of the present invention. FIGS. 3 and 4 are explanatory diagrams of conventional examples. 1...Shield body, 2, 2'...3 segment, 2a...Groove, 3...Shield jack,
4... Press ring, 5... Lever, 6... Support member, 7... Pin, 8... Spring, A... Backward prevention device.
Claims (1)
けとしてトンネルを掘進していく小口径シールド
掘進機において、前記セグメントの外周に、軸方
向の断面形状がのこ歯状の溝が設けられ、該溝と
前記シールド掘進機の前進時を除き結合する先端
部に爪を有し他端部をピンで支持されたレバーと
、該レバーの先端部をセグメントの外周に常時押
圧するばねとを備えてなる複数の後退防止装置が
、前記シールド掘進機の後部内周に配置されてい
ることを特徴とする小口径シールド掘進機。 In a small-diameter shield excavator that excavates a tunnel using segments divided into 3 as receivers of jack thrust, grooves having a sawtooth cross section in the axial direction are provided on the outer periphery of the segments. and a lever that has a claw at its tip and is supported by a pin at the other end, and a spring that constantly presses the tip of the lever against the outer periphery of the segment. A small-diameter shield tunneling machine, characterized in that a plurality of retreat prevention devices are arranged on the inner periphery of the rear part of the shield tunneling machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14351685U JPH0332628Y2 (en) | 1985-09-21 | 1985-09-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14351685U JPH0332628Y2 (en) | 1985-09-21 | 1985-09-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6255690U true JPS6255690U (en) | 1987-04-07 |
| JPH0332628Y2 JPH0332628Y2 (en) | 1991-07-10 |
Family
ID=31053273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14351685U Expired JPH0332628Y2 (en) | 1985-09-21 | 1985-09-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0332628Y2 (en) |
-
1985
- 1985-09-21 JP JP14351685U patent/JPH0332628Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0332628Y2 (en) | 1991-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6255690U (en) | ||
| JPS6255694U (en) | ||
| JPS58185689U (en) | shield tunneling machine | |
| JPS62110689U (en) | ||
| JPS5969297U (en) | Segment assembly device for tunnel boring machine | |
| JPS5912572U (en) | bolt fastener | |
| JPS6269635U (en) | ||
| JPS6231198U (en) | ||
| JPS6424194U (en) | ||
| JPS59175783U (en) | Pipe fitting for hose connection | |
| JPH0237993U (en) | ||
| JPS63171490U (en) | ||
| JPS6042505U (en) | center check | |
| JPH03127888U (en) | ||
| JPS6310077U (en) | ||
| JPH0340390U (en) | ||
| JPH023310U (en) | ||
| JPS61160911U (en) | ||
| JPH02129498U (en) | ||
| JPS6164908U (en) | ||
| JPS61188693U (en) | ||
| JPS62140296U (en) | ||
| JPS62120598U (en) | ||
| JPS5885698U (en) | shield tunneling machine | |
| JPS6365799U (en) |