JPS6187170U - - Google Patents

Info

Publication number
JPS6187170U
JPS6187170U JP17162584U JP17162584U JPS6187170U JP S6187170 U JPS6187170 U JP S6187170U JP 17162584 U JP17162584 U JP 17162584U JP 17162584 U JP17162584 U JP 17162584U JP S6187170 U JPS6187170 U JP S6187170U
Authority
JP
Japan
Prior art keywords
steering
valve
cylinder
work machine
pressure
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
JP17162584U
Other languages
Japanese (ja)
Other versions
JPH0617657Y2 (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 JP1984171625U priority Critical patent/JPH0617657Y2/en
Publication of JPS6187170U publication Critical patent/JPS6187170U/ja
Application granted granted Critical
Publication of JPH0617657Y2 publication Critical patent/JPH0617657Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図面はこの考案の一実施例を示す回路図である
。 １，２は油圧ポンプ、３はデマンド弁、４はス
テアリング弁、５はステアリングシリンダ、６は
作業機操作弁、７は作業機シリンダ、１１は戻り
回路。 The drawing is a circuit diagram showing an embodiment of this invention. 1 and 2 are hydraulic pumps, 3 is a demand valve, 4 is a steering valve, 5 is a steering cylinder, 6 is a work machine operating valve, 7 is a work machine cylinder, and 11 is a return circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] エンジンにより駆動される油圧ポンプ１，２の
吐出圧をデマンド弁３及びステアリング弁４を介
してステアリングシリンダ５へ供給すると共に、
一部は作業機操作弁６より作業機シリンダ７へ供
給するものにおいて、上記ステアリング弁４の戻
り回路１１及び作業機操作弁６の負荷ポートより
ステアリングシリンダ５及び作業機シリンダ７の
負荷圧を検出して、これをパイロツト圧として上
記デマンド弁３に導入し、ステアリング操作に必
要な流量がデマンド弁３よりステアリング弁４を
介してステアリングシリンダ５へ供給されるよう
デマンド弁３を制御してなる建設機械のステアリ
ング回路。 Supplying the discharge pressure of hydraulic pumps 1 and 2 driven by the engine to the steering cylinder 5 via the demand valve 3 and the steering valve 4,
Part of the pressure is supplied from the work machine operation valve 6 to the work machine cylinder 7, and the load pressure of the steering cylinder 5 and work machine cylinder 7 is detected from the return circuit 11 of the steering valve 4 and the load port of the work machine operation valve 6. This is then introduced into the demand valve 3 as pilot pressure, and the demand valve 3 is controlled so that the flow rate necessary for steering operation is supplied from the demand valve 3 to the steering cylinder 5 via the steering valve 4. Machine steering circuit.
JP1984171625U 1984-11-14 1984-11-14 Construction machine steering circuit Expired - Lifetime JPH0617657Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984171625U JPH0617657Y2 (en) 1984-11-14 1984-11-14 Construction machine steering circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984171625U JPH0617657Y2 (en) 1984-11-14 1984-11-14 Construction machine steering circuit

Publications (2)

Publication Number Publication Date
JPS6187170U true JPS6187170U (en) 1986-06-07
JPH0617657Y2 JPH0617657Y2 (en) 1994-05-11

Family

ID=30729301

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984171625U Expired - Lifetime JPH0617657Y2 (en) 1984-11-14 1984-11-14 Construction machine steering circuit

Country Status (1)

Country Link
JP (1) JPH0617657Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6428367U (en) * 1987-08-12 1989-02-20

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4926933A (en) * 1972-07-05 1974-03-09
JPS5322979A (en) * 1976-07-26 1978-03-02 Eaton Corp Device for controlling pressure fluid

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4926933A (en) * 1972-07-05 1974-03-09
JPS5322979A (en) * 1976-07-26 1978-03-02 Eaton Corp Device for controlling pressure fluid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6428367U (en) * 1987-08-12 1989-02-20

Also Published As

Publication number Publication date
JPH0617657Y2 (en) 1994-05-11

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