JPS57112590A - Automatic fall controller for excavating device of vertical hole excavator - Google Patents

Automatic fall controller for excavating device of vertical hole excavator

Info

Publication number
JPS57112590A
JPS57112590A JP18500380A JP18500380A JPS57112590A JP S57112590 A JPS57112590 A JP S57112590A JP 18500380 A JP18500380 A JP 18500380A JP 18500380 A JP18500380 A JP 18500380A JP S57112590 A JPS57112590 A JP S57112590A
Authority
JP
Japan
Prior art keywords
vertical hole
excavating device
automatic fall
hole excavator
fall controller
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
JP18500380A
Other languages
Japanese (ja)
Other versions
JPS622111B2 (en
Inventor
Hiroshi Kusumi
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP18500380A priority Critical patent/JPS57112590A/en
Publication of JPS57112590A publication Critical patent/JPS57112590A/en
Publication of JPS622111B2 publication Critical patent/JPS622111B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP18500380A 1980-12-27 1980-12-27 Automatic fall controller for excavating device of vertical hole excavator Granted JPS57112590A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18500380A JPS57112590A (en) 1980-12-27 1980-12-27 Automatic fall controller for excavating device of vertical hole excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18500380A JPS57112590A (en) 1980-12-27 1980-12-27 Automatic fall controller for excavating device of vertical hole excavator

Publications (2)

Publication Number Publication Date
JPS57112590A true JPS57112590A (en) 1982-07-13
JPS622111B2 JPS622111B2 (en) 1987-01-17

Family

ID=16163070

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18500380A Granted JPS57112590A (en) 1980-12-27 1980-12-27 Automatic fall controller for excavating device of vertical hole excavator

Country Status (1)

Country Link
JP (1) JPS57112590A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009097313A (en) * 2007-10-13 2009-05-07 Mandai Crane:Kk Drilling device
JP2013053483A (en) * 2011-09-05 2013-03-21 East Japan Railway Co Low-height excavating machine capable of changing feed stroke
JP2018071320A (en) * 2016-11-04 2018-05-10 ジャパンパイル株式会社 Ground excavation method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5025404U (en) * 1973-06-29 1975-03-24
JPS512042A (en) * 1974-06-21 1976-01-09 Kogyo Gijutsuin

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5025404U (en) * 1973-06-29 1975-03-24
JPS512042A (en) * 1974-06-21 1976-01-09 Kogyo Gijutsuin

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009097313A (en) * 2007-10-13 2009-05-07 Mandai Crane:Kk Drilling device
JP2013053483A (en) * 2011-09-05 2013-03-21 East Japan Railway Co Low-height excavating machine capable of changing feed stroke
JP2018071320A (en) * 2016-11-04 2018-05-10 ジャパンパイル株式会社 Ground excavation method

Also Published As

Publication number Publication date
JPS622111B2 (en) 1987-01-17

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