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JPS6053681U - ステアリング・作業機用油圧回路 - Google Patents

ステアリング・作業機用油圧回路

Info

Publication number
JPS6053681U
JPS6053681U JP1983145948U JP14594883U JPS6053681U JP S6053681 U JPS6053681 U JP S6053681U JP 1983145948 U JP1983145948 U JP 1983145948U JP 14594883 U JP14594883 U JP 14594883U JP S6053681 U JPS6053681 U JP S6053681U
Authority
JP
Japan
Prior art keywords
circuit
steering
pump
work equipment
equipment
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
JP1983145948U
Other languages
English (en)
Other versions
JPH022695Y2 (ja
Inventor
唐鎌　忠雄
Original Assignee
株式会社小松製作所
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 株式会社小松製作所 filed Critical 株式会社小松製作所
Priority to JP1983145948U priority Critical patent/JPS6053681U/ja
Priority to US06/653,741 priority patent/US4633666A/en
Publication of JPS6053681U publication Critical patent/JPS6053681U/ja
Application granted granted Critical
Publication of JPH022695Y2 publication Critical patent/JPH022695Y2/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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more 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
    • F15B2211/205—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
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
    • F15B2211/3127—Floating position connecting the working ports and the return line
    • 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
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40523—Flow control characterised by the type of flow control means or valve with flow dividers
    • F15B2211/4053—Flow control characterised by the type of flow control means or valve with flow dividers using valves
    • 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
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • 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
    • 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
    • F15B2211/455—Control of flow in the feed line, i.e. meter-in control
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members
    • F15B2211/781—Control of multiple output members one or more output members having priority

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Power Steering Mechanism (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。

Description

【図面の簡単な説明】
第１図は従来の油圧回路図、第２図はその流量特性を示
す表図、第３図は本考案の実施例を示す油圧回路図、第
４図はその流量特性を示す表図である。 Ｐ□はステアリングポンプ、Ｐ２は作業機ポンプ、Ｐ３
は補助ポンプ、１はステアリング回路、７は作業機回路
、１２は絞り。

Claims (1)

    【実用新案登録請求の範囲】
  1. ステアリングポンプＰ□をステアリング回路１に接続し
    、作業機ポンプＰ２と補助ポンプＰ３とをデマンドバル
    ブ６を介してステアリング回路１と作業機回路７とに接
    続制御すると共に、前記デマンドバルブ６を、ステアリ
    ング回路１に設けた絞り１２前後の差圧が所定の最小値
    よりも小さい時には作業機ポンプＰ２と補助ポンプＰ３
    の吐出流量をステアリング回路１に全量供給し、前記差
    圧が所定の最小値よりも順次太き（なると作業機ポンプ
    Ｐ２と補助ポンプＰ３の吐出流量をステアリング回路１
    と作業機回路７とに供給し、前記差圧が所定の最大値よ
    りも大きくなると作業機ポンプＰ２と補助ポンプＰ３の
    吐出流量を全量作業機回路７に供給する構造としたこと
    を特徴とするステアリング・作業機用油圧回路。
JP1983145948U 1983-09-22 1983-09-22 ステアリング・作業機用油圧回路 Granted JPS6053681U (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1983145948U JPS6053681U (ja) 1983-09-22 1983-09-22 ステアリング・作業機用油圧回路
US06/653,741 US4633666A (en) 1983-09-22 1984-09-24 Integrated hydraulic system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1983145948U JPS6053681U (ja) 1983-09-22 1983-09-22 ステアリング・作業機用油圧回路

Publications (2)

Publication Number Publication Date
JPS6053681U true JPS6053681U (ja) 1985-04-15
JPH022695Y2 JPH022695Y2 (ja) 1990-01-23

Family

ID=15396740

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1983145948U Granted JPS6053681U (ja) 1983-09-22 1983-09-22 ステアリング・作業機用油圧回路

Country Status (2)

Country Link
US (1) US4633666A (ja)
JP (1) JPS6053681U (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0450573U (ja) * 1990-09-06 1992-04-28
JP2005297924A (ja) * 2004-04-16 2005-10-27 Tcm Corp 産業用車両

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5313795A (en) * 1992-12-17 1994-05-24 Case Corporation Control system with tri-pressure selector network
KR100328218B1 (ko) * 1996-04-30 2002-06-26 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 유압식건설기계의조작방식선택장치및방법
JP2000087904A (ja) * 1998-09-14 2000-03-28 Komatsu Ltd 圧油供給装置
JP4957111B2 (ja) * 2006-08-08 2012-06-20 株式会社豊田自動織機 産業車両の油圧装置
ITMO20070097A1 (it) * 2007-03-20 2008-09-21 Safim S P A "apparato idraulico"
DE102010034187A1 (de) * 2010-08-12 2012-02-16 Lukas Hydraulik Gmbh Steuereinrichtung für erstes und zweites Arbeitsgerät
AT516181B1 (de) * 2014-10-08 2016-03-15 Weber Hydraulik Gmbh Hydraulikaggregat
JP6924161B2 (ja) * 2018-02-28 2021-08-25 川崎重工業株式会社 建設機械の油圧システム
US11292704B2 (en) * 2018-05-05 2022-04-05 Chapman/Leonard Studio Equipment, Inc. Powered mobile base for a camera crane

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2979908A (en) * 1960-01-04 1961-04-18 Warner Swasey Co Hydraulic control systems
US3355994A (en) * 1966-01-13 1967-12-05 New York Air Brake Co Hydraulic system
US4023364A (en) * 1976-07-19 1977-05-17 Caterpillar Tractor Co. Swing flow supplemental travel for an excavator
US4073141A (en) * 1977-03-17 1978-02-14 Caterpillar Tractor Co. Fluid control system with priority flow
AU530294B2 (en) * 1978-12-25 1983-07-07 K.K. Komatsu Seisakusho Vehicle priority demand circuit
JPS5711476A (en) * 1980-06-24 1982-01-21 Yuasa Battery Co Ltd Secondary organic electrolyte battery
US4422290A (en) * 1981-08-26 1983-12-27 General Signal Hydraulic control system for governing steering and implement actuators

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0450573U (ja) * 1990-09-06 1992-04-28
JP2005297924A (ja) * 2004-04-16 2005-10-27 Tcm Corp 産業用車両

Also Published As

Publication number Publication date
US4633666A (en) 1987-01-06
JPH022695Y2 (ja) 1990-01-23

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