IT1391608B1 - METHOD TO LIMIT THE MAXIMUM POWER REQUIRED FROM THE HYDRAULIC SYSTEM OF AN EARTH-MOVING MACHINE AND OPERATING DISTRIBUTOR OF THE METHOD - Google Patents

METHOD TO LIMIT THE MAXIMUM POWER REQUIRED FROM THE HYDRAULIC SYSTEM OF AN EARTH-MOVING MACHINE AND OPERATING DISTRIBUTOR OF THE METHOD

Info

Publication number
IT1391608B1
IT1391608B1 ITPR2008A000071A ITPR20080071A IT1391608B1 IT 1391608 B1 IT1391608 B1 IT 1391608B1 IT PR2008A000071 A ITPR2008A000071 A IT PR2008A000071A IT PR20080071 A ITPR20080071 A IT PR20080071A IT 1391608 B1 IT1391608 B1 IT 1391608B1
Authority
IT
Italy
Prior art keywords
earth
limit
hydraulic system
maximum power
power required
Prior art date
Application number
ITPR2008A000071A
Other languages
Italian (it)
Inventor
Ulderico Busani
Original Assignee
Walvoil 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 Walvoil Spa filed Critical Walvoil Spa
Priority to ITPR2008A000071A priority Critical patent/IT1391608B1/en
Priority to EP20090174983 priority patent/EP2184495B1/en
Publication of ITPR20080071A1 publication Critical patent/ITPR20080071A1/en
Application granted granted Critical
Publication of IT1391608B1 publication Critical patent/IT1391608B1/en

Links

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
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/163—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for sharing the pump output equally amongst users or groups of users, e.g. using anti-saturation, pressure compensation
    • 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
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating 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
    • 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
    • F15B11/162—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for giving priority to particular servomotors or users
    • 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
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool 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
    • 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
    • F15B2211/30—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
    • F15B2211/30555—Inlet and outlet of the pressure compensating valve being connected to the directional control valve

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
ITPR2008A000071A 2008-11-06 2008-11-06 METHOD TO LIMIT THE MAXIMUM POWER REQUIRED FROM THE HYDRAULIC SYSTEM OF AN EARTH-MOVING MACHINE AND OPERATING DISTRIBUTOR OF THE METHOD IT1391608B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITPR2008A000071A IT1391608B1 (en) 2008-11-06 2008-11-06 METHOD TO LIMIT THE MAXIMUM POWER REQUIRED FROM THE HYDRAULIC SYSTEM OF AN EARTH-MOVING MACHINE AND OPERATING DISTRIBUTOR OF THE METHOD
EP20090174983 EP2184495B1 (en) 2008-11-06 2009-11-04 Method for limiting the maximum power required by the hydraulic system of an earth-moving machine and directional control valve operating said method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPR2008A000071A IT1391608B1 (en) 2008-11-06 2008-11-06 METHOD TO LIMIT THE MAXIMUM POWER REQUIRED FROM THE HYDRAULIC SYSTEM OF AN EARTH-MOVING MACHINE AND OPERATING DISTRIBUTOR OF THE METHOD

Publications (2)

Publication Number Publication Date
ITPR20080071A1 ITPR20080071A1 (en) 2010-05-07
IT1391608B1 true IT1391608B1 (en) 2012-01-11

Family

ID=41076717

Family Applications (1)

Application Number Title Priority Date Filing Date
ITPR2008A000071A IT1391608B1 (en) 2008-11-06 2008-11-06 METHOD TO LIMIT THE MAXIMUM POWER REQUIRED FROM THE HYDRAULIC SYSTEM OF AN EARTH-MOVING MACHINE AND OPERATING DISTRIBUTOR OF THE METHOD

Country Status (2)

Country Link
EP (1) EP2184495B1 (en)
IT (1) IT1391608B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8756930B2 (en) 2010-05-28 2014-06-24 Caterpillar Inc. Hydraulic system having implement and steering flow sharing
ITPR20110039A1 (en) 2011-05-13 2012-11-14 Walvoil Spa HYDRAULIC DISTRIBUTOR WITH PARALLEL CONNECTION TO THE CURSOR FLOW RATE ADJUSTMENT AND LOCAL COMPENSATOR
US9810334B2 (en) 2013-01-31 2017-11-07 Parker-Hannifin Corporation Pressure limited flow priority boost
US9464580B2 (en) 2014-01-02 2016-10-11 Caterpillar Paving Products Inc. Torque limit control
BR102017001760A2 (en) * 2017-01-27 2018-08-14 Caramona Empreendimentos E Participações Ltda hydraulic or pneumatic system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4128482B2 (en) * 2002-04-30 2008-07-30 東芝機械株式会社 Hydraulic control system
JP2004019873A (en) * 2002-06-19 2004-01-22 Toyota Industries Corp Hydraulic control device and industrial vehicle with the hydraulic control device
EP1610002B1 (en) * 2004-06-24 2008-04-02 Walvoil S.p.A. Saturation-proof hydraulic control device with two or more elements
ITPR20060036A1 (en) * 2006-04-12 2007-10-13 Walvoil Spa PRESSURE COMPENSATOR WITH DIFFERENTIAL AREAS PILOTED AND ITS PILOT SYSTEM.

Also Published As

Publication number Publication date
EP2184495B1 (en) 2014-01-08
ITPR20080071A1 (en) 2010-05-07
EP2184495A1 (en) 2010-05-12

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