JPH0617885Y2 - バツクホ−における作業機の降下に対する安全装置 - Google Patents

バツクホ−における作業機の降下に対する安全装置

Info

Publication number
JPH0617885Y2
JPH0617885Y2 JP1987056868U JP5686887U JPH0617885Y2 JP H0617885 Y2 JPH0617885 Y2 JP H0617885Y2 JP 1987056868 U JP1987056868 U JP 1987056868U JP 5686887 U JP5686887 U JP 5686887U JP H0617885 Y2 JPH0617885 Y2 JP H0617885Y2
Authority
JP
Japan
Prior art keywords
pilot
main boom
backhoe
hydraulic
control valve
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
JP1987056868U
Other languages
English (en)
Japanese (ja)
Other versions
JPS63165349U (OSRAM
Inventor
春樹 深堀
Original Assignee
セイレイ工業株式会社
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 セイレイ工業株式会社 filed Critical セイレイ工業株式会社
Priority to JP1987056868U priority Critical patent/JPH0617885Y2/ja
Publication of JPS63165349U publication Critical patent/JPS63165349U/ja
Application granted granted Critical
Publication of JPH0617885Y2 publication Critical patent/JPH0617885Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)
  • Component Parts Of Construction Machinery (AREA)
JP1987056868U 1987-04-14 1987-04-14 バツクホ−における作業機の降下に対する安全装置 Expired - Lifetime JPH0617885Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987056868U JPH0617885Y2 (ja) 1987-04-14 1987-04-14 バツクホ−における作業機の降下に対する安全装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987056868U JPH0617885Y2 (ja) 1987-04-14 1987-04-14 バツクホ−における作業機の降下に対する安全装置

Publications (2)

Publication Number Publication Date
JPS63165349U JPS63165349U (OSRAM) 1988-10-27
JPH0617885Y2 true JPH0617885Y2 (ja) 1994-05-11

Family

ID=30886060

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987056868U Expired - Lifetime JPH0617885Y2 (ja) 1987-04-14 1987-04-14 バツクホ−における作業機の降下に対する安全装置

Country Status (1)

Country Link
JP (1) JPH0617885Y2 (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001092651A1 (en) * 2000-05-31 2001-12-06 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit and attachment emergency drive method for construction machinery

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514731Y2 (OSRAM) * 1975-09-04 1980-04-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001092651A1 (en) * 2000-05-31 2001-12-06 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit and attachment emergency drive method for construction machinery

Also Published As

Publication number Publication date
JPS63165349U (OSRAM) 1988-10-27

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