IT1402421B1 - CONTROL SYSTEM OF AN OLEOHYDRAULIC ACTUATOR FOR RISING AND LOWERING A LOAD - Google Patents

CONTROL SYSTEM OF AN OLEOHYDRAULIC ACTUATOR FOR RISING AND LOWERING A LOAD

Info

Publication number
IT1402421B1
IT1402421B1 ITMO2010A000253A ITMO20100253A IT1402421B1 IT 1402421 B1 IT1402421 B1 IT 1402421B1 IT MO2010A000253 A ITMO2010A000253 A IT MO2010A000253A IT MO20100253 A ITMO20100253 A IT MO20100253A IT 1402421 B1 IT1402421 B1 IT 1402421B1
Authority
IT
Italy
Prior art keywords
oleohydraulic
rising
lowering
actuator
load
Prior art date
Application number
ITMO2010A000253A
Other languages
Italian (it)
Inventor
Graziano Levoni
Danilo Manfredi
Original Assignee
Nem S P A
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 Nem S P A filed Critical Nem S P A
Priority to ITMO2010A000253A priority Critical patent/IT1402421B1/en
Priority to EP11179650.4A priority patent/EP2428686B1/en
Publication of ITMO20100253A1 publication Critical patent/ITMO20100253A1/en
Application granted granted Critical
Publication of IT1402421B1 publication Critical patent/IT1402421B1/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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
    • 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
    • F15B2211/41527—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member 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
    • F15B2211/47—Flow control in one direction only
    • F15B2211/473—Flow control in one direction only without restriction in the reverse direction
    • 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
    • F15B2211/76—Control of force or torque of the output member
    • F15B2211/761—Control of a negative load, i.e. of a load generating hydraulic energy

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
ITMO2010A000253A 2010-09-08 2010-09-08 CONTROL SYSTEM OF AN OLEOHYDRAULIC ACTUATOR FOR RISING AND LOWERING A LOAD IT1402421B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITMO2010A000253A IT1402421B1 (en) 2010-09-08 2010-09-08 CONTROL SYSTEM OF AN OLEOHYDRAULIC ACTUATOR FOR RISING AND LOWERING A LOAD
EP11179650.4A EP2428686B1 (en) 2010-09-08 2011-08-31 System for controlling a hydraulic actuator for the rise and descent of a load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMO2010A000253A IT1402421B1 (en) 2010-09-08 2010-09-08 CONTROL SYSTEM OF AN OLEOHYDRAULIC ACTUATOR FOR RISING AND LOWERING A LOAD

Publications (2)

Publication Number Publication Date
ITMO20100253A1 ITMO20100253A1 (en) 2012-03-09
IT1402421B1 true IT1402421B1 (en) 2013-09-04

Family

ID=43738994

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMO2010A000253A IT1402421B1 (en) 2010-09-08 2010-09-08 CONTROL SYSTEM OF AN OLEOHYDRAULIC ACTUATOR FOR RISING AND LOWERING A LOAD

Country Status (2)

Country Link
EP (1) EP2428686B1 (en)
IT (1) IT1402421B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1402421B1 (en) 2010-09-08 2013-09-04 Nem S P A CONTROL SYSTEM OF AN OLEOHYDRAULIC ACTUATOR FOR RISING AND LOWERING A LOAD

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE393843B (en) * 1975-10-21 1977-05-23 Monsun Tison Ab DEVICE FOR A LOAD MANUFACTURING THROUGH A DIRECTION VALVE CONTROLLED HYDRAULIC ENGINE FOR PREVENTING UNCONTROLLABLE LOAD MOVEMENT IN THE EVENT OF LEAK
FR2459894A1 (en) * 1979-06-26 1981-01-16 Poclain Sa Control system for hydraulic ram - contains load limiting device formed by a piloted progressively opening valve
IT1402421B1 (en) 2010-09-08 2013-09-04 Nem S P A CONTROL SYSTEM OF AN OLEOHYDRAULIC ACTUATOR FOR RISING AND LOWERING A LOAD

Also Published As

Publication number Publication date
EP2428686B1 (en) 2013-11-20
ITMO20100253A1 (en) 2012-03-09
EP2428686A1 (en) 2012-03-14

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