JPH032090U - - Google Patents

Info

Publication number
JPH032090U
JPH032090U JP6292789U JP6292789U JPH032090U JP H032090 U JPH032090 U JP H032090U JP 6292789 U JP6292789 U JP 6292789U JP 6292789 U JP6292789 U JP 6292789U JP H032090 U JPH032090 U JP H032090U
Authority
JP
Japan
Prior art keywords
reaction force
air hammer
casing
rotary
holes
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.)
Granted
Application number
JP6292789U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0726475Y2 (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 JP1989062927U priority Critical patent/JPH0726475Y2/ja
Publication of JPH032090U publication Critical patent/JPH032090U/ja
Application granted granted Critical
Publication of JPH0726475Y2 publication Critical patent/JPH0726475Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP1989062927U 1989-05-30 1989-05-30 簡易エアーハンマー掘削機 Expired - Lifetime JPH0726475Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989062927U JPH0726475Y2 (ja) 1989-05-30 1989-05-30 簡易エアーハンマー掘削機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989062927U JPH0726475Y2 (ja) 1989-05-30 1989-05-30 簡易エアーハンマー掘削機

Publications (2)

Publication Number Publication Date
JPH032090U true JPH032090U (US20020125480A1-20020912-P00900.png) 1991-01-10
JPH0726475Y2 JPH0726475Y2 (ja) 1995-06-14

Family

ID=31592519

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989062927U Expired - Lifetime JPH0726475Y2 (ja) 1989-05-30 1989-05-30 簡易エアーハンマー掘削機

Country Status (1)

Country Link
JP (1) JPH0726475Y2 (US20020125480A1-20020912-P00900.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000080876A (ja) * 1998-09-07 2000-03-21 Yokoyama Kiso Koji:Kk 穿孔工法用回転反力支持装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS557336A (en) * 1978-07-01 1980-01-19 Taisei Corp Rock bed drilling method and apparatus
JPH01111985A (ja) * 1987-10-22 1989-04-28 Takenaka Komuten Co Ltd リバースサーキュレーション工法用掘削機の垂直建入れ精度管理装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS557336A (en) * 1978-07-01 1980-01-19 Taisei Corp Rock bed drilling method and apparatus
JPH01111985A (ja) * 1987-10-22 1989-04-28 Takenaka Komuten Co Ltd リバースサーキュレーション工法用掘削機の垂直建入れ精度管理装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000080876A (ja) * 1998-09-07 2000-03-21 Yokoyama Kiso Koji:Kk 穿孔工法用回転反力支持装置

Also Published As

Publication number Publication date
JPH0726475Y2 (ja) 1995-06-14

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