JPS60111958U - Actuator operating circuit in construction machinery - Google Patents

Actuator operating circuit in construction machinery

Info

Publication number
JPS60111958U
JPS60111958U JP19937483U JP19937483U JPS60111958U JP S60111958 U JPS60111958 U JP S60111958U JP 19937483 U JP19937483 U JP 19937483U JP 19937483 U JP19937483 U JP 19937483U JP S60111958 U JPS60111958 U JP S60111958U
Authority
JP
Japan
Prior art keywords
construction machinery
electric signal
operating circuit
actuator operating
main 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.)
Pending
Application number
JP19937483U
Other languages
Japanese (ja)
Inventor
吉田　基治
俊行 今井
中村　万俊
小河　恵慈
Original Assignee
住友重機械工業株式会社
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 住友重機械工業株式会社 filed Critical 住友重機械工業株式会社
Priority to JP19937483U priority Critical patent/JPS60111958U/en
Publication of JPS60111958U publication Critical patent/JPS60111958U/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は従来公知のアクチュエーター作動用油圧回路。 第２図は本考案に係る油圧回路。第３図と第４図は増幅
器によるｅＨ−ｅｏ’（又はｉ。）関係グラフ。 図において；１・・・油圧シリンダー、２・・・油圧ポ
ンプ、３・・・エンジン、４・・・メインバルブ、５・
・・タンク、６・・・リリーフ弁、７・・・リリーフ弁
、８・・・チェック弁、９・・・リリーフ弁、１０・・
・チェック弁、１１・・・チェック弁、１２・・・操作
レバー、１３・・・変位検出器、１４・・・増幅器、１
５・・・変換器、１６・・・回転数検出器、１７・・・
接点、１８・・・コイル、−１９・・・固定絞り、２０
・・・チェック弁、２１・・・負荷。Figure 1 shows a conventionally known hydraulic circuit for operating an actuator. Figure 2 shows a hydraulic circuit according to the present invention. FIGS. 3 and 4 are eH-eo' (or i.) relationship graphs according to the amplifier. In the figure: 1... Hydraulic cylinder, 2... Hydraulic pump, 3... Engine, 4... Main valve, 5...
...Tank, 6...Relief valve, 7...Relief valve, 8...Check valve, 9...Relief valve, 10...
・Check valve, 11...Check valve, 12...Operation lever, 13...Displacement detector, 14...Amplifier, 1
5...Converter, 16...Rotation speed detector, 17...
Contact, 18... Coil, -19... Fixed aperture, 20
...Check valve, 21...Load.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ポンプ駆動用のエンジンの回転数を検出し、この回転数
を電気信号として出力する手段と、該手段からの電気信
号によってメインバルブ操作用の電気信号のゲインを変
換する手段を有し、前記ゲイン変換でメインバルブのス
プールストロ−クラ制御するようにして油圧シリンダー
の速度制御を電気信号で作動するメインバルブで行なう
ようにしたことを特徴とする建設機械におけるアクチュ
エータの作動回路。It has a means for detecting the rotational speed of the engine for driving the pump and outputting the rotational speed as an electric signal, and a means for converting the gain of the electric signal for operating the main valve by the electric signal from the means, and the gain 1. An actuator operating circuit for construction machinery, characterized in that the main valve operated by an electric signal controls the speed of a hydraulic cylinder by controlling the spool stroker of the main valve by conversion.
JP19937483U 1983-12-28 1983-12-28 Actuator operating circuit in construction machinery Pending JPS60111958U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19937483U JPS60111958U (en) 1983-12-28 1983-12-28 Actuator operating circuit in construction machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19937483U JPS60111958U (en) 1983-12-28 1983-12-28 Actuator operating circuit in construction machinery

Publications (1)

Publication Number Publication Date
JPS60111958U true JPS60111958U (en) 1985-07-29

Family

ID=30759238

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19937483U Pending JPS60111958U (en) 1983-12-28 1983-12-28 Actuator operating circuit in construction machinery

Country Status (1)

Country Link
JP (1) JPS60111958U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009127296A (en) * 2007-11-22 2009-06-11 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd Swing drive control unit and construction machinery including the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840561U (en) * 1971-09-20 1973-05-23
JPS5491687A (en) * 1977-12-28 1979-07-20 Hitachi Constr Mach Co Ltd Hydraulic driving system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840561U (en) * 1971-09-20 1973-05-23
JPS5491687A (en) * 1977-12-28 1979-07-20 Hitachi Constr Mach Co Ltd Hydraulic driving system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009127296A (en) * 2007-11-22 2009-06-11 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd Swing drive control unit and construction machinery including the same

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