JPH0253642B2 - - Google Patents

Info

Publication number
JPH0253642B2
JPH0253642B2 JP56141582A JP14158281A JPH0253642B2 JP H0253642 B2 JPH0253642 B2 JP H0253642B2 JP 56141582 A JP56141582 A JP 56141582A JP 14158281 A JP14158281 A JP 14158281A JP H0253642 B2 JPH0253642 B2 JP H0253642B2
Authority
JP
Japan
Prior art keywords
communicate
opened
flow path
tank
pumps
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.)
Expired - Lifetime
Application number
JP56141582A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5842803A (ja
Inventor
Hiroshi Fukaya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANDOZER IND CO Ltd
Original Assignee
HANDOZER IND CO Ltd
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 HANDOZER IND CO Ltd filed Critical HANDOZER IND CO Ltd
Priority to JP56141582A priority Critical patent/JPS5842803A/ja
Publication of JPS5842803A publication Critical patent/JPS5842803A/ja
Publication of JPH0253642B2 publication Critical patent/JPH0253642B2/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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Operation Control Of Excavators (AREA)
  • Multiple-Way Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
JP56141582A 1981-09-08 1981-09-08 コントロ−ルバルブとこれを使用した作業機の回路 Granted JPS5842803A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56141582A JPS5842803A (ja) 1981-09-08 1981-09-08 コントロ−ルバルブとこれを使用した作業機の回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56141582A JPS5842803A (ja) 1981-09-08 1981-09-08 コントロ−ルバルブとこれを使用した作業機の回路

Publications (2)

Publication Number Publication Date
JPS5842803A JPS5842803A (ja) 1983-03-12
JPH0253642B2 true JPH0253642B2 (enrdf_load_html_response) 1990-11-19

Family

ID=15295342

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56141582A Granted JPS5842803A (ja) 1981-09-08 1981-09-08 コントロ−ルバルブとこれを使用した作業機の回路

Country Status (1)

Country Link
JP (1) JPS5842803A (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016138619A (ja) * 2015-01-28 2016-08-04 ナブテスコ株式会社 方向切換弁

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS611086U (ja) * 1984-06-06 1986-01-07 南機械株式会社 乾燥単板のテンダ−ライジング装置
DE10336334B3 (de) * 2003-08-08 2005-08-04 Cnh Baumaschinen Gmbh Hydraulisches Steuersystem für Baumaschinenen, insbesondere für Bagger
JP6522320B2 (ja) * 2014-11-11 2019-05-29 ナブテスコ株式会社 方向切換弁
JP6773421B2 (ja) * 2016-02-08 2020-10-21 ナブテスコ株式会社 方向切換弁及び油圧システム
JP6717541B2 (ja) 2016-07-28 2020-07-01 キャタピラー エス エー アール エル 弁装置およびこれを備えた流体圧システム
JP7561010B2 (ja) * 2020-11-17 2024-10-03 川崎重工業株式会社 マルチ制御弁

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016138619A (ja) * 2015-01-28 2016-08-04 ナブテスコ株式会社 方向切換弁

Also Published As

Publication number Publication date
JPS5842803A (ja) 1983-03-12

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