JPS6232314B2 - - Google Patents
Info
- Publication number
- JPS6232314B2 JPS6232314B2 JP17447081A JP17447081A JPS6232314B2 JP S6232314 B2 JPS6232314 B2 JP S6232314B2 JP 17447081 A JP17447081 A JP 17447081A JP 17447081 A JP17447081 A JP 17447081A JP S6232314 B2 JPS6232314 B2 JP S6232314B2
- Authority
- JP
- Japan
- Prior art keywords
- cutter
- drag
- support member
- rotary
- main shaft
- 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
- 239000003381 stabilizer Substances 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 4
- 239000011435 rock Substances 0.000 description 16
- 239000002689 soil Substances 0.000 description 12
- 238000009412 basement excavation Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004927 clay Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17447081A JPS5876690A (ja) | 1981-11-02 | 1981-11-02 | たて穴ボ−リングマシンのカツタヘツド |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17447081A JPS5876690A (ja) | 1981-11-02 | 1981-11-02 | たて穴ボ−リングマシンのカツタヘツド |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5876690A JPS5876690A (ja) | 1983-05-09 |
JPS6232314B2 true JPS6232314B2 (ko) | 1987-07-14 |
Family
ID=15979038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17447081A Granted JPS5876690A (ja) | 1981-11-02 | 1981-11-02 | たて穴ボ−リングマシンのカツタヘツド |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5876690A (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0411411U (ko) * | 1990-05-21 | 1992-01-30 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6216161B2 (ja) * | 2013-06-07 | 2017-10-18 | 東日本旅客鉄道株式会社 | ビット装置 |
-
1981
- 1981-11-02 JP JP17447081A patent/JPS5876690A/ja active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0411411U (ko) * | 1990-05-21 | 1992-01-30 |
Also Published As
Publication number | Publication date |
---|---|
JPS5876690A (ja) | 1983-05-09 |
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