KR920701697A - 유압 회로 장치 - Google Patents
유압 회로 장치Info
- Publication number
- KR920701697A KR920701697A KR1019910700211A KR910700211A KR920701697A KR 920701697 A KR920701697 A KR 920701697A KR 1019910700211 A KR1019910700211 A KR 1019910700211A KR 910700211 A KR910700211 A KR 910700211A KR 920701697 A KR920701697 A KR 920701697A
- Authority
- KR
- South Korea
- Prior art keywords
- pressure
- valve
- hydraulic circuit
- valves
- operated
- Prior art date
Links
Classifications
-
- 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
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
- E02F9/2214—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing the shock generated at the stroke end
-
- 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
- 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
- F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
- F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- 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
- F15B2211/3053—In combination with a pressure compensating valve
- F15B2211/3054—In combination with a pressure compensating valve the pressure compensating valve is arranged between directional control valve and output member
-
- 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
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/329—Directional 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/605—Load sensing circuits
- F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
- F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1실시예를 도시하는 개략적인 도시도, 제2도는 교축부의 변형예를 도시하는 도시도, 제3도는 본 발명의 제2실시예를 도시하는 개략적인 도시도.
Claims (2)
- 유압펌프의 압유 토출로에 설치된 복수개의 중심 폐쇄 형식의 조작밸브와, 조작 밸브에 의해서 각각 조작되는 복수개의 작동기와 각 조작 밸브를 접속하는 유압 회로에 각각 설치되며, 각 작동기의 가장 높은 부하압에 맞는 세트 압력을 가지는 압력 보상 밸브를 포함하는 유압 회로 장치에 있어서, 상기 복수개의 조작 밸브중의 1개의 조작 밸브에 설치된 압력 보상 밸브의 부하압 도입로에 교축부가 설치된 것을 특징으로 하는 유압 회로 장치.
- 제1항에 있어서, 상기 조작 밸브에 의해서 조작되는 작동기의 부하압에 의해서 릴리프 작동하도록 작동기의 다른 압력실에 각각 연통하는 제1 및 제2포트에 각각 설치된 릴리프 밸브와, 릴리프 밸브의 드레인측에 압력이 발생하게 설치된 교축부를 가지며, 이것에 의해서 상기 드레인측에 발생된 압력에 의해서 해당 조작밸브의 개구 면적을 감소시킨 것을 특징으로 하는 유압 회로 장치.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP160875 | 1989-06-26 | ||
JP160874 | 1989-06-26 | ||
JP16087489A JPH0328504A (ja) | 1989-06-26 | 1989-06-26 | 油圧回路 |
JP16087589A JPH0328502A (ja) | 1989-06-26 | 1989-06-26 | 油圧回路 |
PCT/JP1990/000830 WO1991000432A1 (en) | 1989-06-26 | 1990-06-26 | Hydraulic circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
KR920701697A true KR920701697A (ko) | 1992-08-12 |
Family
ID=26487220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019910700211A KR920701697A (ko) | 1989-06-26 | 1990-06-26 | 유압 회로 장치 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5477678A (ko) |
EP (1) | EP0440801B2 (ko) |
KR (1) | KR920701697A (ko) |
DE (1) | DE69028291T3 (ko) |
WO (1) | WO1991000432A1 (ko) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5272959A (en) * | 1991-05-21 | 1993-12-28 | Vickers, Incorporated | Power transmission |
FR2699609B1 (fr) * | 1992-12-22 | 1995-02-10 | Hydromo | Procédé et dispositif pour la mise en mouvement ou l'arrêt d'un moteur hydraulique entraînant un ensemble présentant une grande inertie. |
KR0149708B1 (ko) * | 1994-07-25 | 1998-10-15 | 석진철 | 선회 토르크 제어장치 |
DE202005018999U1 (de) * | 2005-12-05 | 2007-04-12 | Liebherr Hydraulikbagger | Hydraulikzylinder mit Endlagendämpfung |
WO2010117372A1 (en) | 2009-04-09 | 2010-10-14 | Vermeer Manufacturing Company | Work machine attachment based speed control system |
JP5368943B2 (ja) * | 2009-11-10 | 2013-12-18 | 川崎重工業株式会社 | 油圧制御装置 |
KR102054666B1 (ko) * | 2017-04-06 | 2020-01-22 | 두산인프라코어 주식회사 | 건설 기계의 유량 제어 방법 및 이를 수행하기 위한 시스템 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3414017A (en) * | 1966-09-06 | 1968-12-03 | Commercial Shearing | Fluid control valves |
JPS6022201B2 (ja) * | 1974-10-29 | 1985-05-31 | ダイキン工業株式会社 | 流体装置 |
JPS58117140A (ja) * | 1981-12-28 | 1983-07-12 | Daikin Ind Ltd | 油圧回路 |
JPS6022201A (ja) * | 1983-07-18 | 1985-02-04 | Toshiba Corp | 衝突防止装置 |
US4693272A (en) * | 1984-02-13 | 1987-09-15 | Husco International, Inc. | Post pressure compensated unitary hydraulic valve |
JPH0830482B2 (ja) * | 1986-12-30 | 1996-03-27 | マンネズマン・レツクスロス・ゲー・エム・ベー・ハー | 少くとも1つのポンプからの送給を受ける少くとも2つの油圧負荷のための制御装置 |
JPH0830481B2 (ja) * | 1987-06-30 | 1996-03-27 | 日立建機株式会社 | 油圧駆動装置 |
US4986071A (en) * | 1989-06-05 | 1991-01-22 | Komatsu Dresser Company | Fast response load sense control system |
-
1990
- 1990-06-26 EP EP90909398A patent/EP0440801B2/en not_active Expired - Lifetime
- 1990-06-26 KR KR1019910700211A patent/KR920701697A/ko not_active Application Discontinuation
- 1990-06-26 DE DE69028291T patent/DE69028291T3/de not_active Expired - Fee Related
- 1990-06-26 WO PCT/JP1990/000830 patent/WO1991000432A1/ja active IP Right Grant
-
1992
- 1992-02-14 US US07/839,664 patent/US5477678A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0440801B2 (en) | 1999-09-22 |
US5477678A (en) | 1995-12-26 |
DE69028291T3 (de) | 2000-03-02 |
WO1991000432A1 (en) | 1991-01-10 |
DE69028291T2 (de) | 1997-01-23 |
DE69028291D1 (de) | 1996-10-02 |
EP0440801A1 (en) | 1991-08-14 |
EP0440801A4 (en) | 1993-01-13 |
EP0440801B1 (en) | 1996-08-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |