JPH01138950U - - Google Patents

Info

Publication number
JPH01138950U
JPH01138950U JP2674688U JP2674688U JPH01138950U JP H01138950 U JPH01138950 U JP H01138950U JP 2674688 U JP2674688 U JP 2674688U JP 2674688 U JP2674688 U JP 2674688U JP H01138950 U JPH01138950 U JP H01138950U
Authority
JP
Japan
Prior art keywords
hydraulic
hydraulic cylinder
load
safety valve
vehicle body
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.)
Pending
Application number
JP2674688U
Other languages
English (en)
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 JP2674688U priority Critical patent/JPH01138950U/ja
Publication of JPH01138950U publication Critical patent/JPH01138950U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Description

【図面の簡単な説明】
第１図は実施例に係る油圧式掘削機の吊り上げ
能力アツプ装置の説明図。 １０……油圧式掘削機、１７……バケツトシリ
ンダ、２０……コントローラ、２１，２２，２３
……位置センサ、３０……吊り荷、４２……比例
電磁式リリーフ弁、５０……比例電磁式安全弁。

Claims (1)

    【実用新案登録請求の範囲】
  1. 油圧式掘削機において、作業機各油圧シリンダ
    に装着した位置センサと、各作業機姿勢ごとに車
    体安定性で吊れる荷重とそのときの各油圧シリン
    ダの保持油圧とを記憶したコントローラと、各油
    圧シリンダの安全弁の設定開弁圧が可変である可
    変安全弁とを備え、ある作業姿勢をとつたとき車
    体安定性で吊れる荷重までは各油圧シリンダの安
    全弁が開かないようにした構成を特徴とする油圧
    式掘削機の吊り上げ能力アツプ装置。
JP2674688U 1988-02-29 1988-02-29 Pending JPH01138950U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2674688U JPH01138950U (ja) 1988-02-29 1988-02-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2674688U JPH01138950U (ja) 1988-02-29 1988-02-29

Publications (1)

Publication Number Publication Date
JPH01138950U true JPH01138950U (ja) 1989-09-22

Family

ID=31248653

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2674688U Pending JPH01138950U (ja) 1988-02-29 1988-02-29

Country Status (1)

Country Link
JP (1) JPH01138950U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010169265A (ja) * 2009-01-21 2010-08-05 Manitowoc Crane Companies Llc 液圧式熱収縮補償装置及び方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010169265A (ja) * 2009-01-21 2010-08-05 Manitowoc Crane Companies Llc 液圧式熱収縮補償装置及び方法

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