JPH0434231Y2 - - Google Patents
Info
- Publication number
- JPH0434231Y2 JPH0434231Y2 JP8640286U JP8640286U JPH0434231Y2 JP H0434231 Y2 JPH0434231 Y2 JP H0434231Y2 JP 8640286 U JP8640286 U JP 8640286U JP 8640286 U JP8640286 U JP 8640286U JP H0434231 Y2 JPH0434231 Y2 JP H0434231Y2
- Authority
- JP
- Japan
- Prior art keywords
- air
- bit
- excavation
- air hammer
- passage
- 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 24
- 238000009412 basement excavation Methods 0.000 claims description 20
- 238000009527 percussion Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000003566 sealing material Substances 0.000 claims 1
- 238000010408 sweeping Methods 0.000 claims 1
- 239000004576 sand Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000011435 rock Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8640286U JPH0434231Y2 (it) | 1986-06-06 | 1986-06-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8640286U JPH0434231Y2 (it) | 1986-06-06 | 1986-06-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62200786U JPS62200786U (it) | 1987-12-21 |
| JPH0434231Y2 true JPH0434231Y2 (it) | 1992-08-14 |
Family
ID=30942674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8640286U Expired JPH0434231Y2 (it) | 1986-06-06 | 1986-06-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0434231Y2 (it) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6716085B2 (ja) * | 2017-11-24 | 2020-07-01 | 大智株式会社 | 掘削装置、回転式掘削機、掘削方法および掘削ビット |
| JP6864199B2 (ja) * | 2017-12-27 | 2021-04-28 | 大智株式会社 | 掘削装置、回転式掘削機、掘削方法および掘削ビット |
| JP2019124009A (ja) * | 2018-01-12 | 2019-07-25 | 大智株式会社 | 掘削装置、回転式掘削機、掘削方法および掘削ビット |
| JP7111356B2 (ja) * | 2018-12-06 | 2022-08-02 | 大智株式会社 | 掘削装置、および、回転式掘削機 |
-
1986
- 1986-06-06 JP JP8640286U patent/JPH0434231Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62200786U (it) | 1987-12-21 |
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