JPS6028284U - Hydraulic pump control device - Google Patents

Hydraulic pump control device

Info

Publication number
JPS6028284U
JPS6028284U JP11864383U JP11864383U JPS6028284U JP S6028284 U JPS6028284 U JP S6028284U JP 11864383 U JP11864383 U JP 11864383U JP 11864383 U JP11864383 U JP 11864383U JP S6028284 U JPS6028284 U JP S6028284U
Authority
JP
Japan
Prior art keywords
control device
hydraulic pump
switching valve
pilot pressure
pump control
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
JP11864383U
Other languages
Japanese (ja)
Inventor
和明 井上
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 JP11864383U priority Critical patent/JPS6028284U/en
Publication of JPS6028284U publication Critical patent/JPS6028284U/en
Pending legal-status Critical Current

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  • 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 the drawing]

第１図は本考案の回路図。第２図は同じく他の実施例。 図において；１・・・・・・制御弁、２・・・・・・絞
り、３・・・・・・可変ポンプ、４・・・・・・切換弁
、５・・・・・・高圧選択弁、６・・・・・・圧力設定
弁。Figure 1 is a circuit diagram of the present invention. FIG. 2 shows another embodiment. In the figure: 1... Control valve, 2... Throttle, 3... Variable pump, 4... Switching valve, 5... High pressure Selection valve, 6...Pressure setting valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 可変ポンプ３の最小吐出量がアクチュエータを微速で動
かすのに必要十分な量にセットされており、可変ポンプ
３の制御ポートに至るパイロット圧油路を外部信号で任
意にしゃ断できる切換弁４を介してパイロット圧源に連
通させ、該切換弁４を連通させた時、ポンプが最少吐出
量を維持する様にしたことを特徴とする油圧ポンプの制
御装置。The minimum discharge amount of the variable pump 3 is set to the amount necessary and sufficient to move the actuator at a slow speed, and the pilot pressure oil path leading to the control port of the variable pump 3 is set via a switching valve 4 that can arbitrarily shut off the pilot pressure oil path leading to the control port of the variable pump 3. A control device for a hydraulic pump, characterized in that when the switching valve 4 is connected to a pilot pressure source and the switching valve 4 is connected, the pump maintains a minimum discharge amount.
JP11864383U 1983-08-01 1983-08-01 Hydraulic pump control device Pending JPS6028284U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11864383U JPS6028284U (en) 1983-08-01 1983-08-01 Hydraulic pump control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11864383U JPS6028284U (en) 1983-08-01 1983-08-01 Hydraulic pump control device

Publications (1)

Publication Number Publication Date
JPS6028284U true JPS6028284U (en) 1985-02-26

Family

ID=30272610

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11864383U Pending JPS6028284U (en) 1983-08-01 1983-08-01 Hydraulic pump control device

Country Status (1)

Country Link
JP (1) JPS6028284U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62132275U (en) * 1986-02-15 1987-08-20
JPH01158578U (en) * 1988-04-18 1989-11-01

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5633385A (en) * 1979-08-27 1981-04-03 Hitachi Construction Machinery Control circuit for speed of crane* etc*

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5633385A (en) * 1979-08-27 1981-04-03 Hitachi Construction Machinery Control circuit for speed of crane* etc*

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62132275U (en) * 1986-02-15 1987-08-20
JPH01158578U (en) * 1988-04-18 1989-11-01

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