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FR2328868A1 - Hydraulic motor line leakage controller - has nonreturn valve in parallel with variable choke valve - Google Patents

Hydraulic motor line leakage controller - has nonreturn valve in parallel with variable choke valve

Info

Publication number
FR2328868A1
FR2328868A1 FR7631728A FR7631728A FR2328868A1 FR 2328868 A1 FR2328868 A1 FR 2328868A1 FR 7631728 A FR7631728 A FR 7631728A FR 7631728 A FR7631728 A FR 7631728A FR 2328868 A1 FR2328868 A1 FR 2328868A1
Authority
FR
France
Prior art keywords
valve
parallel
hydraulic motor
hydraulic fluid
variable choke
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7631728A
Other languages
French (fr)
Other versions
FR2328868B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MONSUN TISON AB
Original Assignee
MONSUN TISON AB
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 MONSUN TISON AB filed Critical MONSUN TISON AB
Publication of FR2328868A1 publication Critical patent/FR2328868A1/en
Application granted granted Critical
Publication of FR2328868B1 publication Critical patent/FR2328868B1/fr
Granted legal-status Critical Current

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
    • F15B11/003—Systems with load-holding 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
    • F15B2211/30505—Non-return valves, i.e. 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
    • F15B2211/30—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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • 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
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • 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
    • F15B2211/415—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
    • F15B2211/47—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
    • F15B2211/50—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
    • 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
    • F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

A hydraulic motor arrangement prevents an uncontrollable load movement when there is leakage in the hydraulic fluid line between the controlling directional valve and the hydraulic fluid chamber of the motor acted upon by the load pressure. This hydraulic fluid chamber (1) is connected to the hydraulic fluid line (5) by a non-return valve (15) set so that it allows a flow of fluid into the chamber and through a variable choke valve (10) parallel to the non-return valve and controlled by an external setting force. The choke valve (10) is so controlled according to the operation of the direction valve (2) that, corresponding to the valve stem movement, it is opened from its nil position into the direction which produces an exit of fluid from the motor fluid chamber.
FR7631728A 1975-10-21 1976-10-21 Hydraulic motor line leakage controller - has nonreturn valve in parallel with variable choke valve Granted FR2328868A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7511805A SE393843B (en) 1975-10-21 1975-10-21 DEVICE FOR A LOAD MANUFACTURING THROUGH A DIRECTION VALVE CONTROLLED HYDRAULIC ENGINE FOR PREVENTING UNCONTROLLABLE LOAD MOVEMENT IN THE EVENT OF LEAK

Publications (2)

Publication Number Publication Date
FR2328868A1 true FR2328868A1 (en) 1977-05-20
FR2328868B1 FR2328868B1 (en) 1981-12-04

Family

ID=20325862

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7631728A Granted FR2328868A1 (en) 1975-10-21 1976-10-21 Hydraulic motor line leakage controller - has nonreturn valve in parallel with variable choke valve

Country Status (3)

Country Link
DE (1) DE2647372A1 (en)
FR (1) FR2328868A1 (en)
SE (1) SE393843B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2487019A2 (en) * 1980-03-25 1982-01-22 Richier Nle Indle Pressure controlled safety device for hydraulic lifting device - uses electromagnetically operated control valve in non-return valve to hold pressure while load is being lowered
EP0068197A1 (en) * 1981-06-12 1983-01-05 Hitachi Construction Machinery Co., Ltd. Locking apparatus of inertial mass drive hydraulic circuit system
EP1347103A2 (en) * 2002-03-06 2003-09-24 Fiat Kobelco Construction Machinery S.p.A. Control of an operating arm of an earthmoving vehicle
ITMO20100253A1 (en) * 2010-09-08 2012-03-09 Nem S P A CONTROL SYSTEM OF AN OLEOHYDRAULIC ACTUATOR FOR RISING AND LOWERING A LOAD

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3421172A1 (en) * 1984-06-07 1985-12-12 Eisenwerke Kaiserslautern Göppner GmbH, 6750 Kaiserslautern Device for controlling hydraulic drives
AT386814B (en) * 1986-06-27 1988-10-25 Schwarzmueller Wilhelm Gmbh TRAILER
JPH01105001A (en) * 1987-10-16 1989-04-21 Smc Corp Uniform speed driving valve
DE4105459A1 (en) * 1991-02-21 1992-08-27 Heilmeier & Weinlein HYDRAULIC CONTROL DEVICE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1336231A (en) * 1962-07-16 1963-08-30 Improvements to hydraulic installations including a reversible receiving machine with non-return valve
US3164171A (en) * 1961-01-30 1965-01-05 Clark Equipment Co Directional control valve
DE2119391A1 (en) * 1971-04-21 1972-10-26 Fa. Johannes Fuchs, 7525 Bad Mingolsheim Hydraulic machine, in particular working machine with lifting device
US3807175A (en) * 1970-11-23 1974-04-30 P Kubik Fluid system having positive vertical hold means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3164171A (en) * 1961-01-30 1965-01-05 Clark Equipment Co Directional control valve
FR1336231A (en) * 1962-07-16 1963-08-30 Improvements to hydraulic installations including a reversible receiving machine with non-return valve
US3807175A (en) * 1970-11-23 1974-04-30 P Kubik Fluid system having positive vertical hold means
DE2119391A1 (en) * 1971-04-21 1972-10-26 Fa. Johannes Fuchs, 7525 Bad Mingolsheim Hydraulic machine, in particular working machine with lifting device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV903/66 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2487019A2 (en) * 1980-03-25 1982-01-22 Richier Nle Indle Pressure controlled safety device for hydraulic lifting device - uses electromagnetically operated control valve in non-return valve to hold pressure while load is being lowered
EP0068197A1 (en) * 1981-06-12 1983-01-05 Hitachi Construction Machinery Co., Ltd. Locking apparatus of inertial mass drive hydraulic circuit system
EP1347103A2 (en) * 2002-03-06 2003-09-24 Fiat Kobelco Construction Machinery S.p.A. Control of an operating arm of an earthmoving vehicle
ITMO20100253A1 (en) * 2010-09-08 2012-03-09 Nem S P A CONTROL SYSTEM OF AN OLEOHYDRAULIC ACTUATOR FOR RISING AND LOWERING A LOAD
EP2428686A1 (en) * 2010-09-08 2012-03-14 Nem S.P.A. System for controlling a hydraulic actuator for the rise and descent of a load

Also Published As

Publication number Publication date
FR2328868B1 (en) 1981-12-04
SE7511805L (en) 1977-04-22
SE393843B (en) 1977-05-23
DE2647372A1 (en) 1977-04-28

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Legal Events

Date Code Title Description
ST Notification of lapse