JPH0447273Y2 - - Google Patents
Info
- Publication number
- JPH0447273Y2 JPH0447273Y2 JP3312687U JP3312687U JPH0447273Y2 JP H0447273 Y2 JPH0447273 Y2 JP H0447273Y2 JP 3312687 U JP3312687 U JP 3312687U JP 3312687 U JP3312687 U JP 3312687U JP H0447273 Y2 JPH0447273 Y2 JP H0447273Y2
- Authority
- JP
- Japan
- Prior art keywords
- hoisting
- switch
- prevention device
- excavation
- bucket
- 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
- 238000009412 basement excavation Methods 0.000 claims description 28
- 230000002265 prevention Effects 0.000 claims description 28
- 238000001514 detection method Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 description 14
- 239000004576 sand Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 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 |
---|---|---|---|
JP3312687U JPH0447273Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1987-03-09 | 1987-03-09 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3312687U JPH0447273Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1987-03-09 | 1987-03-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63141283U JPS63141283U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1988-09-16 |
JPH0447273Y2 true JPH0447273Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1992-11-09 |
Family
ID=30840443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3312687U Expired JPH0447273Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1987-03-09 | 1987-03-09 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0447273Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009046866A (ja) * | 2007-08-20 | 2009-03-05 | Nippon Sharyo Seizo Kaisha Ltd | アースドリル |
-
1987
- 1987-03-09 JP JP3312687U patent/JPH0447273Y2/ja not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009046866A (ja) * | 2007-08-20 | 2009-03-05 | Nippon Sharyo Seizo Kaisha Ltd | アースドリル |
Also Published As
Publication number | Publication date |
---|---|
JPS63141283U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1988-09-16 |