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
Links
- 238000010586 diagram Methods 0.000 description 4
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
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。
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。
Claims (1)
- 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。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988167789U JPH0288005U (ja) | 1988-12-27 | 1988-12-27 | |
EP19900901035 EP0451274A4 (en) | 1988-12-27 | 1989-12-27 | Hydraulic controller |
KR1019900701732A KR910700415A (ko) | 1988-12-27 | 1989-12-27 | 유압제어장치 |
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 (ja) | 1988-12-27 | 1988-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0288005U true JPH0288005U (ja) | 1990-07-12 |
Family
ID=15856144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988167789U Pending JPH0288005U (ja) | 1988-12-27 | 1988-12-27 |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0451274A4 (ja) |
JP (1) | JPH0288005U (ja) |
KR (1) | KR910700415A (ja) |
WO (1) | WO1990007651A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002048553A1 (fr) * | 2000-12-11 | 2002-06-20 | Yanmar Co., Ltd. | Robinet coupleur de cylindre de fleche de vehicule excavateur/pivotant |
JP2010112559A (ja) * | 2009-12-25 | 2010-05-20 | Yanmar Co Ltd | 作業車の方向切換弁 |
JP2014508903A (ja) * | 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 | パイプレイヤ用油圧回路 |
JP2020526714A (ja) * | 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 | オープンセンタ液圧システム及びバルブ |
WO2021219247A1 (en) | 2020-04-30 | 2021-11-04 | Caterpillar Sarl | Hydraulic control circuit |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5468126A (en) * | 1993-12-23 | 1995-11-21 | Caterpillar Inc. | Hydraulic power control system |
US5525043A (en) * | 1993-12-23 | 1996-06-11 | Caterpillar Inc. | Hydraulic power control system |
US5701933A (en) * | 1996-06-27 | 1997-12-30 | Caterpillar Inc. | Hydraulic control system having a bypass valve |
CN103032393A (zh) * | 2012-12-14 | 2013-04-10 | 长春新试验机有限责任公司 | 一种准静态加载液压泵伺服控制装置 |
JP6726127B2 (ja) * | 2017-03-30 | 2020-07-22 | 川崎重工業株式会社 | 油圧システム |
SI26379A (sl) * | 2022-07-13 | 2024-01-31 | Tajfun Liv, Proizvodnja In Razvoj D.O.O. | Hidravlični tokokrog mobilnega hidravličnega dvigala |
CN115875447A (zh) * | 2023-01-09 | 2023-03-31 | 索特传动设备有限公司 | 一种液压控制***、换挡机构及工程机械 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1807173A1 (de) * | 1968-11-06 | 1970-06-18 | Bosch Gmbh Robert | Einrichtung zur elektrohydraulischen Fernsteuerung hydraulischer Wegeventile |
JPS50117296U (ja) * | 1974-03-08 | 1975-09-25 | ||
DE2630468A1 (de) * | 1976-07-07 | 1978-01-12 | Bosch Gmbh Robert | Hydraulisches steuersystem fuer wenigstens zwei verbraucher |
WO1980000268A1 (en) * | 1978-07-13 | 1980-02-21 | Unic Corp | Device for remote control of hydraulic cranes |
JPS5985765U (ja) * | 1982-12-02 | 1984-06-09 | 内田油圧機器工業株式会社 | テ−ルゲ−トリフタ−用油圧回路装置 |
JPS622805U (ja) * | 1985-06-20 | 1987-01-09 | ||
DE3764824D1 (de) * | 1986-01-25 | 1990-10-18 | Hitachi Construction Machinery | Hydraulisches antriebssystem. |
-
1988
- 1988-12-27 JP JP1988167789U patent/JPH0288005U/ja active Pending
-
1989
- 1989-12-27 WO PCT/JP1989/001309 patent/WO1990007651A1/ja not_active Application Discontinuation
- 1989-12-27 EP EP19900901035 patent/EP0451274A4/en not_active Withdrawn
- 1989-12-27 KR KR1019900701732A patent/KR910700415A/ko not_active Application Discontinuation
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002048553A1 (fr) * | 2000-12-11 | 2002-06-20 | Yanmar Co., Ltd. | Robinet coupleur de cylindre de fleche de vehicule excavateur/pivotant |
JP2002181004A (ja) * | 2000-12-11 | 2002-06-26 | Yanmar Diesel Engine Co Ltd | 掘削旋回作業車のブームシリンダ用切換弁 |
JP4532725B2 (ja) * | 2000-12-11 | 2010-08-25 | ヤンマー株式会社 | 掘削旋回作業車のブーム用方向切換弁 |
JP2010112559A (ja) * | 2009-12-25 | 2010-05-20 | Yanmar Co Ltd | 作業車の方向切換弁 |
JP4585607B2 (ja) * | 2009-12-25 | 2010-11-24 | ヤンマー株式会社 | 作業車の方向切換弁 |
JP2014508903A (ja) * | 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 | パイプレイヤ用油圧回路 |
JP2020526714A (ja) * | 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 | オープンセンタ液圧システム及びバルブ |
WO2021219247A1 (en) | 2020-04-30 | 2021-11-04 | Caterpillar Sarl | Hydraulic control circuit |
Also Published As
Publication number | Publication date |
---|---|
EP0451274A4 (en) | 1991-11-13 |
WO1990007651A1 (en) | 1990-07-12 |
EP0451274A1 (en) | 1991-10-16 |
KR910700415A (ko) | 1991-03-15 |