JPH0288005U - - Google Patents

Info

Publication number
JPH0288005U
JPH0288005U JP1988167789U JP16778988U JPH0288005U JP H0288005 U JPH0288005 U JP H0288005U JP 1988167789 U JP1988167789 U JP 1988167789U JP 16778988 U JP16778988 U JP 16778988U JP H0288005 U JPH0288005 U JP H0288005U
Authority
JP
Japan
Prior art keywords
pump
port
control valve
flow rate
circuit
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
JP1988167789U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP1988167789U priority Critical patent/JPH0288005U/ja
Priority to KR1019900701732A priority patent/KR910700415A/en
Priority to EP19900901035 priority patent/EP0451274A4/en
Priority to PCT/JP1989/001309 priority patent/WO1990007651A1/en
Publication of JPH0288005U publication Critical patent/JPH0288005U/ja
Pending 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
    • 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
    • F15B11/0423—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in" by controlling pump output or bypass, other than to maintain constant speed
    • 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
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed 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
    • F15B2211/3105—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
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • 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
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41509—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a directional control valve
    • 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
    • F15B2211/426—Flow control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/634—Electronic controllers using input signals representing a state of a valve
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6654—Flow rate 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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7052—Single-acting output members
    • 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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • 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
    • 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
    • F15B2211/75—Control of speed of the output member

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例を示す回路図、第２図
は流量制御弁のコントロール回路図、第３図は開
口面積と操作弁ストロークの関係を示す図表、第
４図は操作弁ストロークと各ポートの開口面積の
関係を示す図表、第５図は従来の回路図、第６図
はその操作弁ストロークと各ポートの開口面積の
関係を示す図表である。 １はポンプ、１ａは吐出路、２，３は第１、第
２操作弁、４，５は第１、第２アクチユエータ、
ａはポンプポート、ｂはタンクポート、ｃ，ｄは
第１、第２アクチユエータポート。 Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a control circuit diagram of a flow rate control valve, Fig. 3 is a chart showing the relationship between the opening area and the operating valve stroke, and Fig. 4 is a diagram showing the relationship between the operating valve stroke and the operating valve stroke. A chart showing the relationship between the opening area of each port, FIG. 5 is a conventional circuit diagram, and FIG. 6 is a chart showing the relationship between the operating valve stroke and the opening area of each port. 1 is a pump, 1a is a discharge path, 2 and 3 are first and second operating valves, 4 and 5 are first and second actuators,
a is a pump port, b is a tank port, c and d are first and second actuator ports.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 操作ストロークに応じてポンプポートａと第１
アクチユエータポートｃの開口面積及び第２アク
チユエータポートｄとタンクポートｂの開口面積
を制御する複数の操作弁によつてポンプ１の吐出
圧油を複数のアクチユエータに並列に供給するよ
うにした回路において、該ポンプ１の吐出路１ａ
にタンク回路へ導く流量制御弁を設けると共に、
この流量制御弁を操作する操作弁の種類及び数に
応じてコントロールするコントロール手段を設け
たことを特徴とする油圧回路。 Depending on the operating stroke, pump port a and
The pressure oil discharged from the pump 1 is supplied in parallel to the plurality of actuators by a plurality of operating valves that control the opening area of the actuator port c and the opening areas of the second actuator port d and the tank port b. In the circuit, the discharge path 1a of the pump 1
In addition to installing a flow control valve leading to the tank circuit,
A hydraulic circuit characterized in that a control means is provided for controlling the flow rate control valve according to the type and number of operation valves that operate the flow rate control valve.
JP1988167789U 1988-12-27 1988-12-27 Pending JPH0288005U (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1988167789U JPH0288005U (en) 1988-12-27 1988-12-27
KR1019900701732A KR910700415A (en) 1988-12-27 1989-12-27 Hydraulic control device
EP19900901035 EP0451274A4 (en) 1988-12-27 1989-12-27 Hydraulic controller
PCT/JP1989/001309 WO1990007651A1 (en) 1988-12-27 1989-12-27 Hydraulic controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988167789U JPH0288005U (en) 1988-12-27 1988-12-27

Publications (1)

Publication Number Publication Date
JPH0288005U true JPH0288005U (en) 1990-07-12

Family

ID=15856144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988167789U Pending JPH0288005U (en) 1988-12-27 1988-12-27

Country Status (4)

Country Link
EP (1) EP0451274A4 (en)
JP (1) JPH0288005U (en)
KR (1) KR910700415A (en)
WO (1) WO1990007651A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002048553A1 (en) * 2000-12-11 2002-06-20 Yanmar Co., Ltd. Change-over valve for boom cylinder of excavating/slewing work truck
JP2010112559A (en) * 2009-12-25 2010-05-20 Yanmar Co Ltd Direction selector valve for working vehicle
JP2014508903A (en) * 2011-03-07 2014-04-10 ボルボ コンストラクション イクイップメント アーベー Hydraulic circuit for pipe layer
JP2020526714A (en) * 2017-07-14 2020-08-31 ノルトハイドローリック アクティエボラーグ Open center hydraulic system and valve
WO2021219247A1 (en) 2020-04-30 2021-11-04 Caterpillar Sarl Hydraulic control circuit

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5525043A (en) * 1993-12-23 1996-06-11 Caterpillar Inc. Hydraulic power control system
US5468126A (en) * 1993-12-23 1995-11-21 Caterpillar Inc. Hydraulic power control system
US5701933A (en) * 1996-06-27 1997-12-30 Caterpillar Inc. Hydraulic control system having a bypass valve
CN103032393A (en) * 2012-12-14 2013-04-10 长春新试验机有限责任公司 Quasi-static loading hydraulic pump servo control device
JP6726127B2 (en) * 2017-03-30 2020-07-22 川崎重工業株式会社 Hydraulic system
SI26379A (en) * 2022-07-13 2024-01-31 Tajfun Liv, Proizvodnja In Razvoj D.O.O. Hydraulic circuit of a mobile hydraulic lift
CN115875447A (en) * 2023-01-09 2023-03-31 索特传动设备有限公司 Hydraulic control system, gear shifting mechanism and engineering machinery

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1807173A1 (en) * 1968-11-06 1970-06-18 Bosch Gmbh Robert Device for the electro-hydraulic remote control of hydraulic directional control valves
JPS50117296U (en) * 1974-03-08 1975-09-25
DE2630468A1 (en) * 1976-07-07 1978-01-12 Bosch Gmbh Robert HYDRAULIC CONTROL SYSTEM FOR AT LEAST TWO CONSUMERS
WO1980000268A1 (en) * 1978-07-13 1980-02-21 Unic Corp Device for remote control of hydraulic cranes
JPS5985765U (en) * 1982-12-02 1984-06-09 内田油圧機器工業株式会社 Hydraulic circuit device for tailgate lifter
JPS622805U (en) * 1985-06-20 1987-01-09
EP0235545B1 (en) * 1986-01-25 1990-09-12 Hitachi Construction Machinery Co., Ltd. Hydraulic drive system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002048553A1 (en) * 2000-12-11 2002-06-20 Yanmar Co., Ltd. Change-over valve for boom cylinder of excavating/slewing work truck
JP2002181004A (en) * 2000-12-11 2002-06-26 Yanmar Diesel Engine Co Ltd Selector valve for boom cylinder of excavating and turning work vehicle
JP4532725B2 (en) * 2000-12-11 2010-08-25 ヤンマー株式会社 Directional switching valve for excavating and turning work vehicle boom
JP2010112559A (en) * 2009-12-25 2010-05-20 Yanmar Co Ltd Direction selector valve for working vehicle
JP4585607B2 (en) * 2009-12-25 2010-11-24 ヤンマー株式会社 Work vehicle direction switching valve
JP2014508903A (en) * 2011-03-07 2014-04-10 ボルボ コンストラクション イクイップメント アーベー Hydraulic circuit for pipe layer
JP2020526714A (en) * 2017-07-14 2020-08-31 ノルトハイドローリック アクティエボラーグ Open center hydraulic system and valve
WO2021219247A1 (en) 2020-04-30 2021-11-04 Caterpillar Sarl Hydraulic control circuit
US12098523B2 (en) 2020-04-30 2024-09-24 Caterpillar Sarl Hydraulic control circuit

Also Published As

Publication number Publication date
KR910700415A (en) 1991-03-15
WO1990007651A1 (en) 1990-07-12
EP0451274A1 (en) 1991-10-16
EP0451274A4 (en) 1991-11-13

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