JPH0469718B2 - - Google Patents

Info

Publication number
JPH0469718B2
JPH0469718B2 JP62052164A JP5216487A JPH0469718B2 JP H0469718 B2 JPH0469718 B2 JP H0469718B2 JP 62052164 A JP62052164 A JP 62052164A JP 5216487 A JP5216487 A JP 5216487A JP H0469718 B2 JPH0469718 B2 JP H0469718B2
Authority
JP
Japan
Prior art keywords
boom
front frame
hoisting
frame
attached
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 - Lifetime
Application number
JP62052164A
Other languages
English (en)
Japanese (ja)
Other versions
JPS63219790A (ja
Inventor
Koji Takeda
Akio Mitani
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 JP5216487A priority Critical patent/JPS63219790A/ja
Publication of JPS63219790A publication Critical patent/JPS63219790A/ja
Publication of JPH0469718B2 publication Critical patent/JPH0469718B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP5216487A 1987-03-09 1987-03-09 ア−スドリルフロントの起伏安全装置 Granted JPS63219790A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5216487A JPS63219790A (ja) 1987-03-09 1987-03-09 ア−スドリルフロントの起伏安全装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5216487A JPS63219790A (ja) 1987-03-09 1987-03-09 ア−スドリルフロントの起伏安全装置

Publications (2)

Publication Number Publication Date
JPS63219790A JPS63219790A (ja) 1988-09-13
JPH0469718B2 true JPH0469718B2 (2) 1992-11-06

Family

ID=12907190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5216487A Granted JPS63219790A (ja) 1987-03-09 1987-03-09 ア−スドリルフロントの起伏安全装置

Country Status (1)

Country Link
JP (1) JPS63219790A (2)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5691790U (2) * 1979-12-17 1981-07-22
JPS57127024A (en) * 1981-01-30 1982-08-07 Komatsu Ltd Safety device for hydraulic excavator
JPS6135959U (ja) * 1984-07-31 1986-03-05 ティー・シー・エム株式会社 建設車両のブ−ム緩衝装置

Also Published As

Publication number Publication date
JPS63219790A (ja) 1988-09-13

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