JPS6245953B2 - - Google Patents

Info

Publication number
JPS6245953B2
JPS6245953B2 JP13934682A JP13934682A JPS6245953B2 JP S6245953 B2 JPS6245953 B2 JP S6245953B2 JP 13934682 A JP13934682 A JP 13934682A JP 13934682 A JP13934682 A JP 13934682A JP S6245953 B2 JPS6245953 B2 JP S6245953B2
Authority
JP
Japan
Prior art keywords
drill pipe
expansion
drilling bit
bit
expanding
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
JP13934682A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5931392A (ja
Inventor
Kenji Kawasaki
Akira Oohashi
Takashi Matsuo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konoike Construction Co Ltd
Original Assignee
Konoike Construction Co Ltd
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 by Konoike Construction Co Ltd filed Critical Konoike Construction Co Ltd
Priority to JP13934682A priority Critical patent/JPS5931392A/ja
Publication of JPS5931392A publication Critical patent/JPS5931392A/ja
Publication of JPS6245953B2 publication Critical patent/JPS6245953B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP13934682A 1982-08-11 1982-08-11 拡底用回転掘削ビツト装置 Granted JPS5931392A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13934682A JPS5931392A (ja) 1982-08-11 1982-08-11 拡底用回転掘削ビツト装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13934682A JPS5931392A (ja) 1982-08-11 1982-08-11 拡底用回転掘削ビツト装置

Publications (2)

Publication Number Publication Date
JPS5931392A JPS5931392A (ja) 1984-02-20
JPS6245953B2 true JPS6245953B2 (enrdf_load_stackoverflow) 1987-09-29

Family

ID=15243184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13934682A Granted JPS5931392A (ja) 1982-08-11 1982-08-11 拡底用回転掘削ビツト装置

Country Status (1)

Country Link
JP (1) JPS5931392A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63184612A (ja) * 1987-01-27 1988-07-30 Hitachi Constr Mach Co Ltd 拡底掘削機

Also Published As

Publication number Publication date
JPS5931392A (ja) 1984-02-20

Similar Documents

Publication Publication Date Title
JPS627747Y2 (enrdf_load_stackoverflow)
US4604818A (en) Under reaming pile bore excavating bucket and method of its excavation
JP5380064B2 (ja) 杭穴掘削方法及び杭穴掘削ヘッド
JPS6245953B2 (enrdf_load_stackoverflow)
CN220955466U (zh) 一种可快速取土的旋挖钻桶装置
CN211549591U (zh) 一种用于建筑基础工程的扩孔钻头
KR102515073B1 (ko) 착암기에 탈착되는 할암장치
CN212985111U (zh) 一种长螺旋钻孔设备及其可伸缩钻头
JPH01280196A (ja) 拡底杭用回転掘削装置
JPS6358999B2 (enrdf_load_stackoverflow)
US5219249A (en) Reinforced concrete load-bearing pile forming device
RU2794455C1 (ru) Расширитель скважины
JP2003041877A (ja) 掘削ヘッド
JPH089271Y2 (ja) 掘削用ケーシングのチヤツク構造
JPS6115116Y2 (enrdf_load_stackoverflow)
JPS6220354B2 (enrdf_load_stackoverflow)
JPS6227541Y2 (enrdf_load_stackoverflow)
JPH10195924A (ja) 掘削機および掘削方法
JPH086864Y2 (ja) 拡底工法用の掘削装置
JPS5923109Y2 (ja) ア−スドリルの拡底装置
CN210460507U (zh) 一种用于泥浆护壁旋挖钻孔桩的扩径钻头
JPS6210392A (ja) 拡底杭用の拡底部掘削機
JP3021832U (ja) 掘削装置
JPH0960462A (ja) 掘削工法
JPH093890A (ja) アースアンカー装置