JPS6315421Y2 - - Google Patents
Info
- Publication number
- JPS6315421Y2 JPS6315421Y2 JP8662582U JP8662582U JPS6315421Y2 JP S6315421 Y2 JPS6315421 Y2 JP S6315421Y2 JP 8662582 U JP8662582 U JP 8662582U JP 8662582 U JP8662582 U JP 8662582U JP S6315421 Y2 JPS6315421 Y2 JP S6315421Y2
- Authority
- JP
- Japan
- Prior art keywords
- guide post
- drive shaft
- air
- drive device
- rock
- 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
- 239000011435 rock Substances 0.000 claims description 17
- 238000009412 basement excavation Methods 0.000 claims description 15
- 239000012634 fragment Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8662582U JPS58189288U (ja) | 1982-06-09 | 1982-06-09 | 岩盤掘削装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8662582U JPS58189288U (ja) | 1982-06-09 | 1982-06-09 | 岩盤掘削装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58189288U JPS58189288U (ja) | 1983-12-15 |
JPS6315421Y2 true JPS6315421Y2 (sv) | 1988-04-28 |
Family
ID=30095412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8662582U Granted JPS58189288U (ja) | 1982-06-09 | 1982-06-09 | 岩盤掘削装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58189288U (sv) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60190885U (ja) * | 1984-05-28 | 1985-12-18 | 株式会社 利根ボ−リング | エアスイベル付緩衝装置 |
-
1982
- 1982-06-09 JP JP8662582U patent/JPS58189288U/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS58189288U (ja) | 1983-12-15 |
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