JPS6343273Y2 - - Google Patents
Info
- Publication number
- JPS6343273Y2 JPS6343273Y2 JP4910084U JP4910084U JPS6343273Y2 JP S6343273 Y2 JPS6343273 Y2 JP S6343273Y2 JP 4910084 U JP4910084 U JP 4910084U JP 4910084 U JP4910084 U JP 4910084U JP S6343273 Y2 JPS6343273 Y2 JP S6343273Y2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- bit
- guide
- guide rod
- hole
- 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
- 238000005553 drilling Methods 0.000 claims description 18
- 239000011435 rock Substances 0.000 claims description 15
- 238000009412 basement excavation Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000012858 resilient material Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4910084U JPS60162190U (ja) | 1984-04-05 | 1984-04-05 | 岩盤用穿孔掘削装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4910084U JPS60162190U (ja) | 1984-04-05 | 1984-04-05 | 岩盤用穿孔掘削装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60162190U JPS60162190U (ja) | 1985-10-28 |
| JPS6343273Y2 true JPS6343273Y2 (enrdf_load_stackoverflow) | 1988-11-11 |
Family
ID=30565976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4910084U Granted JPS60162190U (ja) | 1984-04-05 | 1984-04-05 | 岩盤用穿孔掘削装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60162190U (enrdf_load_stackoverflow) |
-
1984
- 1984-04-05 JP JP4910084U patent/JPS60162190U/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60162190U (ja) | 1985-10-28 |
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