JPS6136623Y2 - - Google Patents

Info

Publication number
JPS6136623Y2
JPS6136623Y2 JP1981190734U JP19073481U JPS6136623Y2 JP S6136623 Y2 JPS6136623 Y2 JP S6136623Y2 JP 1981190734 U JP1981190734 U JP 1981190734U JP 19073481 U JP19073481 U JP 19073481U JP S6136623 Y2 JPS6136623 Y2 JP S6136623Y2
Authority
JP
Japan
Prior art keywords
slip
drill pipe
base frame
hydraulic jack
semicircular part
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
Application number
JP1981190734U
Other languages
English (en)
Japanese (ja)
Other versions
JPS5894787U (ja
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP19073481U priority Critical patent/JPS5894787U/ja
Publication of JPS5894787U publication Critical patent/JPS5894787U/ja
Application granted granted Critical
Publication of JPS6136623Y2 publication Critical patent/JPS6136623Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP19073481U 1981-12-21 1981-12-21 竪孔掘削機のスリツプ装置 Granted JPS5894787U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19073481U JPS5894787U (ja) 1981-12-21 1981-12-21 竪孔掘削機のスリツプ装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19073481U JPS5894787U (ja) 1981-12-21 1981-12-21 竪孔掘削機のスリツプ装置

Publications (2)

Publication Number Publication Date
JPS5894787U JPS5894787U (ja) 1983-06-27
JPS6136623Y2 true JPS6136623Y2 (en, 2012) 1986-10-23

Family

ID=30104248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19073481U Granted JPS5894787U (ja) 1981-12-21 1981-12-21 竪孔掘削機のスリツプ装置

Country Status (1)

Country Link
JP (1) JPS5894787U (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001342789A (ja) * 2000-05-31 2001-12-14 Mitani Sekisan Co Ltd 杭穴掘削時の事故予防方法及び掘削ロッド

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5581995A (en) * 1978-12-15 1980-06-20 Hitachi Construction Machinery Fulllcasing type reverse circulation drill method and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001342789A (ja) * 2000-05-31 2001-12-14 Mitani Sekisan Co Ltd 杭穴掘削時の事故予防方法及び掘削ロッド

Also Published As

Publication number Publication date
JPS5894787U (ja) 1983-06-27

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