JPH0478305U - - Google Patents

Info

Publication number
JPH0478305U
JPH0478305U JP12165990U JP12165990U JPH0478305U JP H0478305 U JPH0478305 U JP H0478305U JP 12165990 U JP12165990 U JP 12165990U JP 12165990 U JP12165990 U JP 12165990U JP H0478305 U JPH0478305 U JP H0478305U
Authority
JP
Japan
Prior art keywords
pressure
relief
main pump
maximum load
pilot
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
JP12165990U
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 JP12165990U priority Critical patent/JPH0478305U/ja
Publication of JPH0478305U publication Critical patent/JPH0478305U/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図は本考案に係る油圧制御装置の回路図、
第２図はパイロツト一次圧と差圧との関係を示す
線図、第３図は従来例の回路図である。 １ａ，１ｂ……パイロツトバルブ、２ａ，２ｂ
……操作レバー、３……パイロツトポンプ、４…
…リリーフバルブ、５ａ，５ｂ……方向切換弁、
６ａ，６ｂ……圧力補償弁、７……ロードセンシ
ングレギユレータ、８ａ，８ｂ……アクチユエー
タ、９……主ポンプ。

Claims (1)

    【実用新案登録請求の範囲】
  1. 方向切換弁５，５ａ〜５ｎ操作用のパイロツト
    バルブ１，１ａ〜１ｎのパイロツト一次圧を規制
    するためのリリーフ弁４のリリーフ圧を、主ポン
    プ９の吐出圧と最大負荷圧との差圧により調整可
    能とし、主ポンプ９の吐出圧と最大負荷圧との差
    圧が小さくなるにつれて低いリリーフ圧となるよ
    うにしたことを特徴とする油圧制御装置。
JP12165990U 1990-11-20 1990-11-20 Pending JPH0478305U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12165990U JPH0478305U (ja) 1990-11-20 1990-11-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12165990U JPH0478305U (ja) 1990-11-20 1990-11-20

Publications (1)

Publication Number Publication Date
JPH0478305U true JPH0478305U (ja) 1992-07-08

Family

ID=31869507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12165990U Pending JPH0478305U (ja) 1990-11-20 1990-11-20

Country Status (1)

Country Link
JP (1) JPH0478305U (ja)

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