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ATE498744T1 - FLUID SYSTEM AND OPERATING METHOD THEREOF - Google Patents

FLUID SYSTEM AND OPERATING METHOD THEREOF

Info

Publication number
ATE498744T1
ATE498744T1 AT08726371T AT08726371T ATE498744T1 AT E498744 T1 ATE498744 T1 AT E498744T1 AT 08726371 T AT08726371 T AT 08726371T AT 08726371 T AT08726371 T AT 08726371T AT E498744 T1 ATE498744 T1 AT E498744T1
Authority
AT
Austria
Prior art keywords
chamber
fluid system
accumulator
operating method
valve arrangement
Prior art date
Application number
AT08726371T
Other languages
German (de)
Inventor
Benjamin Hanks
Andrew Smith
Original Assignee
Caterpillar Inc
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 Caterpillar Inc filed Critical Caterpillar Inc
Application granted granted Critical
Publication of ATE498744T1 publication Critical patent/ATE498744T1/en

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
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
    • 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
    • E02F9/2207—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing or compensating oscillations
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/021—Installations or systems with accumulators used for damping
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/008—Reduction of noise or vibration
    • 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
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F15B2211/8613—Control during or prevention of abnormal conditions the abnormal condition being oscillations

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • External Artificial Organs (AREA)

Abstract

A fluid system (16) is disclosed for selectively fluidly connecting a first chamber (18) of a cylinder (14) to an accumulator (42) such that in a first position of a valve arrangement (26) the first chamber (18) is fluidly connected both to the accumulator (42) and a second chamber (20) of the cylinder (14). In a second position of the first valve arrangement (26) the first chamber (18) is fluidly connected only with the accumulator (42). In a third position of the first valve arrangement (26), the first chamber (18) is connected neither with the accumulator (42) nor with the second chamber (20). Further disclosed is a machine (10) provided with such fluid system and a method of operating such machine (10).
AT08726371T 2007-03-01 2008-03-03 FLUID SYSTEM AND OPERATING METHOD THEREOF ATE498744T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07103359A EP1964982A1 (en) 2007-03-01 2007-03-01 Fluid system and method of operating thereof.
PCT/US2008/002817 WO2008106233A1 (en) 2007-03-01 2008-03-03 Fluid system and method of operating thereof

Publications (1)

Publication Number Publication Date
ATE498744T1 true ATE498744T1 (en) 2011-03-15

Family

ID=38091673

Family Applications (1)

Application Number Title Priority Date Filing Date
AT08726371T ATE498744T1 (en) 2007-03-01 2008-03-03 FLUID SYSTEM AND OPERATING METHOD THEREOF

Country Status (4)

Country Link
EP (2) EP1964982A1 (en)
AT (1) ATE498744T1 (en)
DE (1) DE602008004993D1 (en)
WO (1) WO2008106233A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53113104A (en) * 1977-03-14 1978-10-03 Hitachi Construction Machinery Boom turning hydraulic circuit
SU804792A1 (en) * 1978-08-07 1981-02-15 Сибирский Автомобильно-Дорожный Институт Им.B.B.Куйбышева Министерствавысшего И Среднего Специальногообразования Рсфср Earth-moving machine working equipment hydraulic drive
DE4416228A1 (en) * 1994-05-07 1995-11-09 Rexroth Mannesmann Gmbh Hydraulic system for a mobile working device, in particular for a wheel loader
DE19913784A1 (en) * 1999-03-26 2000-09-28 Mannesmann Rexroth Ag Load-sensing hydraulic control arrangement for a mobile machine
US6634653B2 (en) * 2001-07-17 2003-10-21 Probir Chatterjea & Associates, Inc. Ride control system for construction equipment
JP3929380B2 (en) * 2002-09-26 2007-06-13 株式会社小松製作所 Position energy recovery / regeneration device for work equipment
US6789387B2 (en) * 2002-10-01 2004-09-14 Caterpillar Inc System for recovering energy in hydraulic circuit

Also Published As

Publication number Publication date
EP1964982A1 (en) 2008-09-03
EP2118385A1 (en) 2009-11-18
WO2008106233A1 (en) 2008-09-04
EP2118385B1 (en) 2011-02-16
DE602008004993D1 (en) 2011-03-31

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties