IT8767306A0 - Circuito idraulico di comando per organi di lavoro di macchine movimento terra con circuito di sovrali mentazione - Google Patents

Circuito idraulico di comando per organi di lavoro di macchine movimento terra con circuito di sovrali mentazione

Info

Publication number
IT8767306A0
IT8767306A0 IT8767306A IT6730687A IT8767306A0 IT 8767306 A0 IT8767306 A0 IT 8767306A0 IT 8767306 A IT8767306 A IT 8767306A IT 6730687 A IT6730687 A IT 6730687A IT 8767306 A0 IT8767306 A0 IT 8767306A0
Authority
IT
Italy
Prior art keywords
circuit
hydraulic control
working parts
overhead
control circuit
Prior art date
Application number
IT8767306A
Other languages
English (en)
Other versions
IT1208866B (it
Inventor
Piero Tha A Gerrj Warren
Original Assignee
Chs Vickers Spa
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 Chs Vickers Spa filed Critical Chs Vickers Spa
Priority to IT8767306A priority Critical patent/IT1208866B/it
Publication of IT8767306A0 publication Critical patent/IT8767306A0/it
Priority to EP88830156A priority patent/EP0287529B1/en
Priority to DE8888830156T priority patent/DE3866578D1/de
Priority to AT88830156T priority patent/ATE70111T1/de
Priority to US07/180,880 priority patent/US4845948A/en
Priority to JP63090458A priority patent/JP2618680B2/ja
Application granted granted Critical
Publication of IT1208866B publication Critical patent/IT1208866B/it

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
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • 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
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/123—Drives or control devices specially adapted therefor
    • 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
    • E02F9/2285—Pilot-operated systems
    • 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
    • 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
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • 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
    • 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
    • F15B2211/3144—Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional 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
    • F15B2211/32—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
    • F15B2211/40—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
    • F15B2211/41554—Flow control characterised by the connections of the flow control means in the circuit being connected to a return line 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
    • F15B2211/428—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
    • F15B2211/46—Control of flow in the return line, i.e. meter-out 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
    • F15B2211/50581—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance valves
    • F15B2211/5059—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance valves using double counterbalance 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
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5153—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve
    • F15B2211/5154—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve being connected to multiple ports of an 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
    • F15B2211/50—Pressure control
    • F15B2211/555—Pressure control for assuring a minimum pressure, e.g. by using a back pressure 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
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6052—Load sensing circuits having valve means between output member and the load sensing circuit using 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
    • F15B2211/60—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
    • F15B2211/60—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
    • F15B2211/6055—Load sensing circuits having valve means between output member and the load sensing circuit using pressure relief 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/61—Secondary circuits
    • F15B2211/613—Feeding circuits
    • 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
    • F15B2211/625—Accumulators
    • 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
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • 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
    • F15B2211/67—Methods for controlling pilot 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
    • F15B2211/70—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
    • F15B2211/7058—Rotary 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
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Earth Drilling (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
IT8767306A 1987-04-14 1987-04-14 Circuito idraulico di comando per organi di lavoro di macchine movimento terra con circuito di sovrali mentazione IT1208866B (it)

Priority Applications (6)

Application Number Priority Date Filing Date Title
IT8767306A IT1208866B (it) 1987-04-14 1987-04-14 Circuito idraulico di comando per organi di lavoro di macchine movimento terra con circuito di sovrali mentazione
EP88830156A EP0287529B1 (en) 1987-04-14 1988-04-12 Hydraulic circuit with a booster circuit for operating the working members of earth-moving machines
DE8888830156T DE3866578D1 (de) 1987-04-14 1988-04-12 Hydraulischer kreislauf mit einem verstaerkerkreislauf zum betaetigen der arbeitsgeraete von erdbewegungsmaschinen.
AT88830156T ATE70111T1 (de) 1987-04-14 1988-04-12 Hydraulischer kreislauf mit einem verstaerkerkreislauf zum betaetigen der arbeitsgeraete von erdbewegungsmaschinen.
US07/180,880 US4845948A (en) 1987-04-14 1988-04-13 Hydraulic circuit with a booster circuit for operating the working members of earth-moving machines
JP63090458A JP2618680B2 (ja) 1987-04-14 1988-04-14 土工機械の作業部材を作動させるためのブースター回路を備える液体圧回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8767306A IT1208866B (it) 1987-04-14 1987-04-14 Circuito idraulico di comando per organi di lavoro di macchine movimento terra con circuito di sovrali mentazione

Publications (2)

Publication Number Publication Date
IT8767306A0 true IT8767306A0 (it) 1987-04-14
IT1208866B IT1208866B (it) 1989-07-10

Family

ID=11301321

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8767306A IT1208866B (it) 1987-04-14 1987-04-14 Circuito idraulico di comando per organi di lavoro di macchine movimento terra con circuito di sovrali mentazione

Country Status (6)

Country Link
US (1) US4845948A (it)
EP (1) EP0287529B1 (it)
JP (1) JP2618680B2 (it)
AT (1) ATE70111T1 (it)
DE (1) DE3866578D1 (it)
IT (1) IT1208866B (it)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5063742A (en) * 1989-07-26 1991-11-12 Kabushiki Kaisha Kobe Seiko Sho Method of controlling swing motion of a revolving superstructure and hydraulic control system for carrying out same
JP2600009B2 (ja) * 1990-04-25 1997-04-16 株式会社神戸製鋼所 クレーンの旋回制御装置
US5062266A (en) * 1990-08-23 1991-11-05 Kabushiki Kaisha Kobe Seiko Sho Slewing control device for crane
US5481874A (en) * 1991-06-20 1996-01-09 Caterpillar Inc. Exhaust pressurizing circuit including flow amplification
WO1993000515A1 (en) * 1991-06-20 1993-01-07 Caterpillar Inc. Exhaust pressurizing circuit including flow amplification
US5333449A (en) * 1991-09-02 1994-08-02 Hitachi Construction Machinery Co., Ltd. Pressure compensating valve assembly
DE4140423A1 (de) * 1991-12-07 1993-06-09 Mannesmann Rexroth Gmbh, 8770 Lohr, De Vorrichtung zur einstellung des arbeitsfluessigkeitsdruckes
US5590525A (en) * 1993-06-01 1997-01-07 Sundstrand Corporation Method of preventing cavitation in an axial piston pump during an aiding load and system and valve employing the same
KR960011173A (ko) * 1994-09-30 1996-04-20 김무 유압모터의 캐비테이션 방지장치
US6062405A (en) * 1996-04-26 2000-05-16 Manitowoc Crane Group, Inc. Hydraulic boom hoist cylinder crane
US6481202B1 (en) 1997-04-16 2002-11-19 Manitowoc Crane Companies, Inc. Hydraulic system for boom hoist cylinder crane
CA2414716A1 (en) 2002-12-27 2004-06-27 Gestion Thima Inc. Putting practice device and practice method using said device
US7707829B2 (en) * 2007-09-07 2010-05-04 Caterpillar S.A.R.L. Flushing system having a single charge relief valve
KR101861856B1 (ko) * 2012-01-27 2018-05-28 두산인프라코어 주식회사 건설기계의 스윙 모터 유압제어장치
US20150047331A1 (en) * 2013-08-14 2015-02-19 Caterpillar Inc. Hydraulic system for machine
US20150167276A1 (en) * 2013-12-13 2015-06-18 Cnh America Llc Power beyond valve assembly for an agricultural implement
DE102014206891A1 (de) * 2014-04-10 2015-10-15 Robert Bosch Gmbh Hydrostatischer Antrieb

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3625007A (en) * 1969-02-07 1971-12-07 Lee R Herndon Jr Hydraulic system including flow stabilization means
GB1240585A (en) * 1969-06-26 1971-07-28 Ind Handels Combinatie Holland Suction dredger
DE2031587C3 (de) * 1970-06-26 1979-01-11 Kloeckner-Humboldt-Deutz Ag, 5000 Koeln Hydraulikanlage für eine Zugmaschine
US3913453A (en) * 1974-08-30 1975-10-21 Deere & Co Hydrostatic transmission
CA1014822A (en) * 1975-05-16 1977-08-02 Ronald J. Klitz Travel-brake control system
US3987623A (en) * 1976-01-23 1976-10-26 Caterpillar Tractor Co. Controlled priority fluid system of a crawler type vehicle
DE2625134A1 (de) * 1976-06-04 1977-12-15 Bosch Gmbh Robert Hydraulische steuereinrichtung zur verteilung von druckfluessigkeit auf zwei systeme
DE2911891C2 (de) * 1979-03-26 1983-10-13 Mannesmann Rexroth GmbH, 8770 Lohr Vorrichtung zum Steuern eines Hydromotors
IT1234937B (it) * 1985-02-14 1992-06-02 Cinotto Hydraulic Sistema antisaturazione per circuiti idraulici di comando con pompe e distributori compensati in pressione per organi di lavoro di macchine movimento terra
IN165005B (it) * 1985-07-17 1989-07-29 Hitachi Construction Machinery
DE3532816A1 (de) * 1985-09-13 1987-03-26 Rexroth Mannesmann Gmbh Steueranordnung fuer mindestens zwei von mindestens einer pumpe gespeiste hydraulische verbraucher
IT1187892B (it) * 1986-02-04 1987-12-23 Chs Vickers Spa Circuito idraulico di comando per organi di lavoro di macchine movimento terra con frenatura centralizzata degli attuatori
IT1195178B (it) * 1986-09-24 1988-10-12 Chs Vickers Spa Sistema di recupero di portata per circuiti idraulici con pompe e di stributori compensati in pressione per organi di lavoro di macchine movimento terra

Also Published As

Publication number Publication date
IT1208866B (it) 1989-07-10
ATE70111T1 (de) 1991-12-15
EP0287529A1 (en) 1988-10-19
DE3866578D1 (de) 1992-01-16
EP0287529B1 (en) 1991-12-04
JPS6429528A (en) 1989-01-31
US4845948A (en) 1989-07-11
JP2618680B2 (ja) 1997-06-11

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