JPS59181283U - Power control device for three hydraulic pumps driven by a common prime mover - Google Patents

Power control device for three hydraulic pumps driven by a common prime mover

Info

Publication number
JPS59181283U
JPS59181283U JP7611783U JP7611783U JPS59181283U JP S59181283 U JPS59181283 U JP S59181283U JP 7611783 U JP7611783 U JP 7611783U JP 7611783 U JP7611783 U JP 7611783U JP S59181283 U JPS59181283 U JP S59181283U
Authority
JP
Japan
Prior art keywords
pump
prime mover
follower
control device
servo 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.)
Granted
Application number
JP7611783U
Other languages
Japanese (ja)
Other versions
JPH0310401Y2 (en
Inventor
稔 内田
Original Assignee
内田油圧機器工業株式会社
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 内田油圧機器工業株式会社 filed Critical 内田油圧機器工業株式会社
Priority to JP7611783U priority Critical patent/JPS59181283U/en
Publication of JPS59181283U publication Critical patent/JPS59181283U/en
Application granted granted Critical
Publication of JPH0310401Y2 publication Critical patent/JPH0310401Y2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/26—Power control functions

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]

第１図は従来例の線図、第２図は本考案の実施例の線図
、第３図はその要部の具体例の断面図、第４図は追従ポ
ンプの出力特性曲線図、第５図は優先ポンプの出力特性
曲線図である。　　　　　　　　−１・・・原動機、２
・・・優先ポンプ、３．４・・・追従ポンプ、５・・・
制御シリンダ、６・・・サーボ弁、７・・・レギュレー
タ、８・・・開閉弁、８ａ・・・絞り＆置、８ｂ・・・
・閉位置、９．１０・・・アクチュエータ、１１゜、１
２・・・ブリードオフ回路、１３・・・補助ピストン。Fig. 1 is a line diagram of a conventional example, Fig. 2 is a line diagram of an embodiment of the present invention, Fig. 3 is a sectional view of a specific example of the main part, Fig. 4 is an output characteristic curve diagram of a follow-up pump, FIG. 5 is an output characteristic curve diagram of the priority pump. -1... Prime mover, 2
...Priority pump, 3.4...Following pump, 5...
Control cylinder, 6... Servo valve, 7... Regulator, 8... Open/close valve, 8a... Throttle & position, 8b...
・Closed position, 9.10... Actuator, 11°, 1
2... Bleed-off circuit, 13... Auxiliary piston.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 共通の原動機１に１台の優先ポンプ２と２台の可変容量
形の追従ポンプ３．４を連結し、各追従ポンプ３，４の
夫々にポンプ容量を変化させる制御シリンダ５と該シリ
ンダ５に作用するポンプ吐出圧を制御するサーボ弁６で
構成されたレギュレータ７を設けて各ポンプ３．４の出
力を制御し、該サーボ弁６に作用するポンプ吐出圧を優
先ポンプ２のポンプ吐出圧に応じて絞り位置８ａから閉
位置８ｂへと摺動する開閉弁８により制御する式のもの
に於て、各追従ポンプ３．４が夫々駆動するアクチュエ
ータ９，１０への回路にブリードオフ回路１１．１２を
設け、各サーボ弁６に、自己のポンプ系のブリードオフ
回路１１．１２の圧力による力と開閉弁８により制御さ
れた両追従ポンプ３．４のポンプ吐出圧による力とが互
に対向して作用すると共に該ブリードオフ回路１１．１
２の圧力による力の優勢で該サーボ弁６を各追従ポンプ
３．４のポンプ容量の減少方向に移動させる補助ピスト
ン１３を設けて成る共通の原動機により駆動される３台
の油圧ポンプに於ける動力制御装置。One priority pump 2 and two variable displacement follower pumps 3.4 are connected to a common prime mover 1, and each follower pump 3, 4 has a control cylinder 5 for changing the pump displacement, and a control cylinder 5 for changing the pump capacity. A regulator 7 consisting of a servo valve 6 is provided to control the output of each pump 3.4, and the pump discharge pressure acting on the servo valve 6 is adjusted to the pump discharge pressure of the priority pump 2. In the type controlled by the on-off valve 8 which slides from the throttle position 8a to the closed position 8b in response, a bleed-off circuit 11. 12 is provided, and each servo valve 6 is provided with a force due to the pressure of the bleed-off circuit 11.12 of its own pump system and a force due to the pump discharge pressure of both follower pumps 3.4 controlled by the on-off valve 8, which are opposed to each other. and the bleed-off circuit 11.1
In three hydraulic pumps driven by a common prime mover provided with an auxiliary piston 13 which moves the servo valve 6 in the direction of decreasing the pump capacity of each follower pump 3.4 with the preponderance of the force due to the pressure of Power control device.
JP7611783U 1983-05-23 1983-05-23 Power control device for three hydraulic pumps driven by a common prime mover Granted JPS59181283U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7611783U JPS59181283U (en) 1983-05-23 1983-05-23 Power control device for three hydraulic pumps driven by a common prime mover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7611783U JPS59181283U (en) 1983-05-23 1983-05-23 Power control device for three hydraulic pumps driven by a common prime mover

Publications (2)

Publication Number Publication Date
JPS59181283U true JPS59181283U (en) 1984-12-03
JPH0310401Y2 JPH0310401Y2 (en) 1991-03-14

Family

ID=30206169

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7611783U Granted JPS59181283U (en) 1983-05-23 1983-05-23 Power control device for three hydraulic pumps driven by a common prime mover

Country Status (1)

Country Link
JP (1) JPS59181283U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002066841A1 (en) * 2001-02-19 2002-08-29 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit of construction machinery
WO2008090890A1 (en) * 2007-01-22 2008-07-31 Hitachi Construction Machinery Co., Ltd. Pump control device for construction machine
WO2012035735A1 (en) * 2010-09-15 2012-03-22 川崎重工業株式会社 Method for controlling driving of work machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57129991U (en) * 1981-02-09 1982-08-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57129991U (en) * 1981-02-09 1982-08-13

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002066841A1 (en) * 2001-02-19 2002-08-29 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit of construction machinery
EP1286057A1 (en) * 2001-02-19 2003-02-26 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit of construction machinery
EP1286057A4 (en) * 2001-02-19 2009-08-19 Hitachi Construction Machinery Hydraulic circuit of construction machinery
WO2008090890A1 (en) * 2007-01-22 2008-07-31 Hitachi Construction Machinery Co., Ltd. Pump control device for construction machine
JP2008175368A (en) * 2007-01-22 2008-07-31 Hitachi Constr Mach Co Ltd Pump control device of construction machine
WO2012035735A1 (en) * 2010-09-15 2012-03-22 川崎重工業株式会社 Method for controlling driving of work machine
JP2012062653A (en) * 2010-09-15 2012-03-29 Kawasaki Heavy Ind Ltd Drive control method of work machine
CN103080551A (en) * 2010-09-15 2013-05-01 川崎重工业株式会社 Method for controlling driving of work machine
KR101498345B1 (en) * 2010-09-15 2015-03-03 카와사키 주코교 카부시키 카이샤 Method for controlling driving of work machine
US9309645B2 (en) 2010-09-15 2016-04-12 Kawasaki Jukogyo Kabushiki Kaisha Drive control method of operating machine

Also Published As

Publication number Publication date
JPH0310401Y2 (en) 1991-03-14

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