JPS587903U - hydraulic control device - Google Patents

hydraulic control device

Info

Publication number
JPS587903U
JPS587903U JP10172781U JP10172781U JPS587903U JP S587903 U JPS587903 U JP S587903U JP 10172781 U JP10172781 U JP 10172781U JP 10172781 U JP10172781 U JP 10172781U JP S587903 U JPS587903 U JP S587903U
Authority
JP
Japan
Prior art keywords
pressure
control device
signal
hydraulic control
pump
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
JP10172781U
Other languages
Japanese (ja)
Other versions
JPH0229281Y2 (en
Inventor
好美 長谷川
浅岡　正晴
Original Assignee
カヤバ工業株式会社
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 カヤバ工業株式会社 filed Critical カヤバ工業株式会社
Priority to JP10172781U priority Critical patent/JPS587903U/en
Publication of JPS587903U publication Critical patent/JPS587903U/en
Application granted granted Critical
Publication of JPH0229281Y2 publication Critical patent/JPH0229281Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • 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]

図面第１図は従来の回路図、第２図はこの考案の１実施
例を示す回路図である。 １０・・・サーボ形可変吐出ポンプ、１１・・・切換弁
、１２・・・アクチュエータたるシリンダ、１５・・・
信号発生オリフィス、１９・・・パイロット式比例減圧
弁、２０−−・・サーボシリンダ、２２・・・補助ポン
プ。FIG. 1 is a conventional circuit diagram, and FIG. 2 is a circuit diagram showing an embodiment of this invention. DESCRIPTION OF SYMBOLS 10... Servo type variable discharge pump, 11... Switching valve, 12... Actuator cylinder, 15...
Signal generation orifice, 19... Pilot type proportional pressure reducing valve, 20... Servo cylinder, 22... Auxiliary pump.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 切換弁を介してサーボ形可変吐出ポンプとアクチュエー
タとを連通させるとともに、その切換弁が中立位置に保
持されている状態で、前記可変吐出ポンプの吐出油が、
そのポンプのサーボシリンダの動作信号を発生する信号
発生オリフィスを通過する関係にした油圧制御装置にお
いて、前記信号発生オリフィスの前圧および後圧を信号
圧力としたパイロット式比例減圧弁に作用させるととも
に、その差圧に応じてパイロット式比例減圧弁が作動し
、前記サーボシリンダに通じる補助ポンプの吐出圧を比
例制御する関係にした油圧制御装置。The servo-type variable discharge pump and the actuator are communicated via the switching valve, and with the switching valve held at the neutral position, the discharge oil of the variable discharge pump is
In a hydraulic control device in which an operation signal for a servo cylinder of the pump passes through a signal generation orifice that generates an operation signal, the front pressure and rear pressure of the signal generation orifice act on a pilot type proportional pressure reducing valve that uses the signal pressure as the signal pressure, and A hydraulic control device in which a pilot type proportional pressure reducing valve operates according to the differential pressure to proportionally control the discharge pressure of the auxiliary pump communicating with the servo cylinder.
JP10172781U 1981-07-08 1981-07-08 hydraulic control device Granted JPS587903U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10172781U JPS587903U (en) 1981-07-08 1981-07-08 hydraulic control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10172781U JPS587903U (en) 1981-07-08 1981-07-08 hydraulic control device

Publications (2)

Publication Number Publication Date
JPS587903U true JPS587903U (en) 1983-01-19
JPH0229281Y2 JPH0229281Y2 (en) 1990-08-07

Family

ID=29896384

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10172781U Granted JPS587903U (en) 1981-07-08 1981-07-08 hydraulic control device

Country Status (1)

Country Link
JP (1) JPS587903U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5169769A (en) * 1974-12-14 1976-06-16 Kawasaki Heavy Ind Ltd Ekiatsusochino ryuryoseigyokairo

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5169769A (en) * 1974-12-14 1976-06-16 Kawasaki Heavy Ind Ltd Ekiatsusochino ryuryoseigyokairo

Also Published As

Publication number Publication date
JPH0229281Y2 (en) 1990-08-07

Similar Documents

Publication Publication Date Title
JPS587903U (en) hydraulic control device
JPS587902U (en) hydraulic control device
JPS61133102U (en)
JPS5981801U (en) hydraulic control device
JPS59154456U (en) pilot check valve device
JPS59178008U (en) Auxiliary control valve device for agricultural tractors
JPS5889601U (en) Hydraulic circuit device for switching operation
JPS60106876U (en) Hydraulic switching valve for steering
JPS5998103U (en) Direction/flow control valve
JPS59120799U (en) Hydraulic circuit for forklift tilt cylinder
JPS581670U (en) excavator hydraulic circuit
JPS60103073U (en) steering circuit
JPS5882557U (en) Hydraulic closed circuit device
JPS6096479U (en) Hydraulic circuit of hydraulic machine with blade
JPS583371U (en) Rear wheel steering control device
JPS59123097U (en) Hydraulic circuit for forklift tilt cylinder
JPS5845765U (en) work vehicle
JPS59102649U (en) Hydraulic drive control device
JPS59194603U (en) Switching delay prevention device for directional valves
JPS58152578U (en) Pump flow control device
JPS59135958U (en) Hydraulic excavator hydraulic circuit
JPS6120974U (en) Pilot operating circuit
JPS6069801U (en) Hydraulic circuit of mold clamping device
JPS59186503U (en) Return oil separation circuit
JPS60193870U (en) Vehicle rear wheel steering device