JPH0482060U - - Google Patents

Info

Publication number
JPH0482060U
JPH0482060U JP12289790U JP12289790U JPH0482060U JP H0482060 U JPH0482060 U JP H0482060U JP 12289790 U JP12289790 U JP 12289790U JP 12289790 U JP12289790 U JP 12289790U JP H0482060 U JPH0482060 U JP H0482060U
Authority
JP
Japan
Prior art keywords
pilot pressure
valve
control
hydraulic actuators
valves
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
JP12289790U
Other languages
Japanese (ja)
Other versions
JP2547772Y2 (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 JP12289790U priority Critical patent/JP2547772Y2/en
Publication of JPH0482060U publication Critical patent/JPH0482060U/ja
Application granted granted Critical
Publication of JP2547772Y2 publication Critical patent/JP2547772Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)

Description

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

第１図はこの考案の一実施例である油圧シヨベ
ルの油圧回路図、第２図は従来例の油圧シヨベル
の油圧回路図である。 １Ａ〜１Ｅ……油圧シリンダ（油圧アクチユエ
ータ）、１Ｆ，１Ｇ……油圧モータ（油圧アクチ
ユエータ）、２Ａ〜２Ｇ……コントロール弁、６
Ａ〜６Ｄ……パイロツト圧力発生弁、９ａ１，９
ａ２〜９ｄ１，９ｄ２……油路、１０……マルチ
モード切換弁、１１ａ１，１１ａ２，１１ａ３，
１１ｂ１，１１ｂ２，１１ｂ３……シヤトル弁、
１３Ａ，１３Ｂ……圧力検出器。 FIG. 1 is a hydraulic circuit diagram of a hydraulic excavator which is an embodiment of this invention, and FIG. 2 is a hydraulic circuit diagram of a conventional hydraulic excavator. 1A to 1E...Hydraulic cylinder (hydraulic actuator), 1F, 1G...Hydraulic motor (hydraulic actuator), 2A to 2G...Control valve, 6
A~6D...Pilot pressure generation valve, 9a1, 9
a2-9d1, 9d2...Oil passage, 10...Multi-mode switching valve, 11a1, 11a2, 11a3,
11b1, 11b2, 11b3...shuttle valve,
13A, 13B...Pressure detector.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 複数個の油圧アクチユエータと、これら各油圧
アクチユエータの作動および作動方向を切換え制
御するコントロール弁と、操作レバーの操作に応
じて上記各コントロール弁の切換え制御をおこな
わせるためのパイロツト圧力を発生するパイロツ
ト圧力発生弁と、これら各パイロツト圧力発生弁
と上記各コントロール弁とを接続する油路の途中
に配置されて上記各油圧アクチユエータの作動パ
ターンを複数モードに変換可能なマルチモード切
換弁と、上記各油路のうち少なくとも１つの油路
からパイロツト圧力を取出すシヤトル弁と、この
シヤトル弁から取出したパイロツト圧力を検出す
る圧力検出器とを備えた建設機械の油圧回路制御
装置において、上記シヤトル弁を上記マルチモー
ド切換弁とコントロール弁との間に配置したこと
を特徴とする建設機械の油圧回路制御装置。 A plurality of hydraulic actuators, a control valve that switches and controls the operation and operation direction of each of these hydraulic actuators, and a pilot pressure that generates pilot pressure to control switching of each of the control valves in response to operation of an operating lever. a multi-mode switching valve that is arranged in the middle of an oil path connecting each of the pilot pressure generation valves and each of the above control valves and is capable of converting the operating pattern of each of the above hydraulic actuators into multiple modes; A hydraulic circuit control device for construction machinery comprising a shuttle valve that takes out pilot pressure from at least one of the oil passages, and a pressure detector that detects the pilot pressure taken out from the shuttle valve. A hydraulic circuit control device for construction machinery, characterized in that it is arranged between a mode switching valve and a control valve.
JP12289790U 1990-11-21 1990-11-21 Hydraulic circuit control device for construction machinery Expired - Fee Related JP2547772Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12289790U JP2547772Y2 (en) 1990-11-21 1990-11-21 Hydraulic circuit control device for construction machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12289790U JP2547772Y2 (en) 1990-11-21 1990-11-21 Hydraulic circuit control device for construction machinery

Publications (2)

Publication Number Publication Date
JPH0482060U true JPH0482060U (en) 1992-07-16
JP2547772Y2 JP2547772Y2 (en) 1997-09-17

Family

ID=31870632

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12289790U Expired - Fee Related JP2547772Y2 (en) 1990-11-21 1990-11-21 Hydraulic circuit control device for construction machinery

Country Status (1)

Country Link
JP (1) JP2547772Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0532453U (en) * 1991-10-09 1993-04-27 セイレイ工業株式会社 Operation lever pattern change mechanism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101535302B1 (en) * 2008-12-24 2015-07-09 두산인프라코어 주식회사 Operation pattern change apparatus for construction machinery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0532453U (en) * 1991-10-09 1993-04-27 セイレイ工業株式会社 Operation lever pattern change mechanism

Also Published As

Publication number Publication date
JP2547772Y2 (en) 1997-09-17

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Legal Events

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