KR20070043808A - 유압시스템과 그러한 시스템으로 구성되는 작업기계 - Google Patents
유압시스템과 그러한 시스템으로 구성되는 작업기계 Download PDFInfo
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- KR20070043808A KR20070043808A KR1020077002030A KR20077002030A KR20070043808A KR 20070043808 A KR20070043808 A KR 20070043808A KR 1020077002030 A KR1020077002030 A KR 1020077002030A KR 20077002030 A KR20077002030 A KR 20077002030A KR 20070043808 A KR20070043808 A KR 20070043808A
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- load
- pump
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- point
- hydraulic system
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/07—Supply of pressurised fluid for steering also supplying other consumers ; control thereof
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- 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
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- 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
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- 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
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- 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
- E02F9/2296—Systems with a variable displacement pump
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- 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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
- F15B11/165—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for adjusting the pump output or bypass in response to demand
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- 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
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- 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
- F15B2211/20592—Combinations of pumps for supplying high and low pressure
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- 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
- F15B2211/25—Pressure control functions
- F15B2211/251—High pressure control
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- 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
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- 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
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
- F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
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- 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
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
- F15B2211/31594—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having multiple pressure sources and multiple output members
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- 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
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Description
Claims (9)
- 유압시스템에 있어서,제1부하 출구지점(3)과 제2부하 출구지점(4)에 유압유를 공급하는 제1펌프(1);제2부하 출구지점(4)에는 유압유를 공급하지만 제1부하 출구지점(3)에는 유압유를 공급하지 않는 제2펌프(2);제1부하 출구지점에서의 부하 압력을 감지하기 위한 수단; 및제2부하 출구지점에서의 부하 압력을 감지하기 위한 수단;을 포함하며,제1부하 출구지점(3)과 제2부하 출구지점(4)에서 감지된 부하압력을 기초로 하여 제1펌프를 제어하기 위한 수단(27);과제1부하 출구지점(3)에서 감지된 부하압력은 기초로 하지 않고 제2부하 출구지점(4)에서 감지된 부하압력만을 기초로 하여 제2펌프를 제어하기 위한 수단(28)을 특징으로 하여 구성되는 유압시스템.
- 제1항에 있어서,상기 유압시스템은 제2펌프(2)상에 배치되는 역지밸브(29)를 포함하며, 상기 역지밸브(29)는 제2펌프(2) 쪽으로 및 이를 통해 탱크로 가는 유동을 방지하기 위해 배치되는 것을 특징으로 하는 유압시스템.
- 제1항 또는 제2항에 있어서,상기 유압시스템은 제1펌프(1)로부터 제1부하 출구지점(3)과 제2부하 출구지점(4)으로 가는 유압유의 유동을 제어하는 우선순위밸브(7)를 포함하며, 상기 우선순위밸브(7)는 제1부하 출구지점(3)으로 가는 유동에 우선권을 주도록 배치되는 것을 특징으로 하는 유압시스템.
- 제1항 내지 제3항 중 어느 한 항에 있어서,제1펌프(1)가 제2펌프(2)보다 더 높은 제어 압력을 가지는 것을 특징으로 하는 유압시스템.
- 작업기계에 있어서,제1항 내지 제4항 중 어느 한 항에서 청구된 바와 같은 유압시스템이 제공되는 것을 특징으로 작업기계.
- 작업기계에 있어서,제1부하 출구지점(3)은 작업기계의 조종기능과 관련되는 것을 특징으로 하는 작업기계.
- 제5항 또는 제6항에 있어서,제2부하 출구지점(4)은 작업기계의 작업기능 중의 하나와 관련되는 것을 특징으로 하는 작업기계.
- 제7항에 있어서,상기 작업기계는 리프팅 유닛을 가지며, 작업기능은 리프팅 유닛의 올림, 내림 또는 기울임 기능인 것을 특징으로 하는 작업기계.
- 제5항 내지 제8항 중 어느 한 항에 있어서,상기 작업기계는 작업기계의 추진력을 위한 그리고 유압시스템을 구동하기 위한 모터를 포함하는 것을 특징으로 하는 작업기계.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0401938-6 | 2004-07-28 | ||
SE0401938A SE527434C8 (sv) | 2004-07-28 | 2004-07-28 | Hydraulisksystem och arbetsmaskin innefattande ett sådant system |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20070043808A true KR20070043808A (ko) | 2007-04-25 |
KR101209136B1 KR101209136B1 (ko) | 2012-12-06 |
Family
ID=32867299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020077002030A Expired - Fee Related KR101209136B1 (ko) | 2004-07-28 | 2005-06-22 | 유압시스템과 그러한 시스템을 포함하는 작업기계 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7464545B2 (ko) |
EP (1) | EP1773644B1 (ko) |
JP (1) | JP4909268B2 (ko) |
KR (1) | KR101209136B1 (ko) |
CN (1) | CN100486851C (ko) |
SE (1) | SE527434C8 (ko) |
WO (1) | WO2006011836A1 (ko) |
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JP2755420B2 (ja) * | 1989-04-21 | 1998-05-20 | 東芝機械株式会社 | 油圧ショベルの油圧回路 |
JP2810711B2 (ja) * | 1989-08-25 | 1998-10-15 | 東芝機械株式会社 | ロードセンシング型油圧回路の合流弁装置 |
JPH03260401A (ja) * | 1990-03-09 | 1991-11-20 | Hitachi Constr Mach Co Ltd | 土木・建設機械の油圧駆動装置 |
JP3694355B2 (ja) * | 1996-02-09 | 2005-09-14 | 日立建機株式会社 | ロードセンシング制御による油圧駆動装置 |
JP3904173B2 (ja) * | 1998-12-21 | 2007-04-11 | 株式会社小松製作所 | 作業車両の油圧制御装置 |
KR200308827Y1 (ko) | 2002-12-17 | 2003-03-26 | 동양기전 주식회사 | 크레인의 유압시스템 |
-
2004
- 2004-07-28 SE SE0401938A patent/SE527434C8/sv not_active IP Right Cessation
-
2005
- 2005-06-22 JP JP2007523509A patent/JP4909268B2/ja active Active
- 2005-06-22 CN CNB2005800248913A patent/CN100486851C/zh active Active
- 2005-06-22 WO PCT/SE2005/000998 patent/WO2006011836A1/en active Application Filing
- 2005-06-22 US US11/571,900 patent/US7464545B2/en active Active
- 2005-06-22 EP EP05753854A patent/EP1773644B1/en not_active Not-in-force
- 2005-06-22 KR KR1020077002030A patent/KR101209136B1/ko not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2008508483A (ja) | 2008-03-21 |
SE0401938L (sv) | 2006-01-29 |
KR101209136B1 (ko) | 2012-12-06 |
JP4909268B2 (ja) | 2012-04-04 |
SE0401938D0 (sv) | 2004-07-28 |
EP1773644B1 (en) | 2012-12-05 |
US7464545B2 (en) | 2008-12-16 |
WO2006011836A1 (en) | 2006-02-02 |
EP1773644A1 (en) | 2007-04-18 |
SE527434C2 (sv) | 2006-03-07 |
US20070234718A1 (en) | 2007-10-11 |
CN100486851C (zh) | 2009-05-13 |
CN1989039A (zh) | 2007-06-27 |
SE527434C8 (sv) | 2006-03-28 |
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