JPH0475996B2 - - Google Patents
Info
- Publication number
- JPH0475996B2 JPH0475996B2 JP4892387A JP4892387A JPH0475996B2 JP H0475996 B2 JPH0475996 B2 JP H0475996B2 JP 4892387 A JP4892387 A JP 4892387A JP 4892387 A JP4892387 A JP 4892387A JP H0475996 B2 JPH0475996 B2 JP H0475996B2
- Authority
- JP
- Japan
- Prior art keywords
- chuck
- cylinder
- main
- piston
- guide rods
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000003517 fume Substances 0.000 description 7
- 238000009412 basement excavation Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000009933 burial Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4892387A JPS63217099A (ja) | 1987-03-05 | 1987-03-05 | 推進装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4892387A JPS63217099A (ja) | 1987-03-05 | 1987-03-05 | 推進装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63217099A JPS63217099A (ja) | 1988-09-09 |
JPH0475996B2 true JPH0475996B2 (zh) | 1992-12-02 |
Family
ID=12816774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4892387A Granted JPS63217099A (ja) | 1987-03-05 | 1987-03-05 | 推進装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63217099A (zh) |
-
1987
- 1987-03-05 JP JP4892387A patent/JPS63217099A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS63217099A (ja) | 1988-09-09 |
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