EP0604332A1 - Verfahren und Vorrichtung zum Starten oder Bremsen eines hydraulischen Antriebsmotors, welcher ein Gerät mit grosser Massenträgheit antreibt - Google Patents

Verfahren und Vorrichtung zum Starten oder Bremsen eines hydraulischen Antriebsmotors, welcher ein Gerät mit grosser Massenträgheit antreibt Download PDF

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Publication number
EP0604332A1
EP0604332A1 EP93420500A EP93420500A EP0604332A1 EP 0604332 A1 EP0604332 A1 EP 0604332A1 EP 93420500 A EP93420500 A EP 93420500A EP 93420500 A EP93420500 A EP 93420500A EP 0604332 A1 EP0604332 A1 EP 0604332A1
Authority
EP
European Patent Office
Prior art keywords
pressure
valve
chamber
movable piston
motor
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.)
Withdrawn
Application number
EP93420500A
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English (en)
French (fr)
Inventor
Maxime Boni
Alain Rebour
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.)
HYDROMO
Original Assignee
HYDROMO
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 HYDROMO filed Critical HYDROMO
Publication of EP0604332A1 publication Critical patent/EP0604332A1/de
Withdrawn legal-status Critical Current

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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
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors
    • 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
    • E02F9/08—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°
    • E02F9/128—Braking systems
    • 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
    • E02F9/2214—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing the shock generated at the stroke end
    • 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"
    • F15B11/0445—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" with counterbalance valves, e.g. to prevent overrunning or for braking
    • 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
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means 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
    • F15B2211/50—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
    • F15B2211/575—Pilot pressure 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
    • F15B2211/70—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
    • F15B2211/76—Control of force or torque of the output member

Definitions

  • the present invention relates to a method as well as to the means allowing its implementation to ensure the setting in motion or the stopping of a hydraulic motor driving an assembly having a great inertia, for example to ensure the rotation of a turret and the translation of tracked or pneumatic equipment ....
  • the solutions proposed to date consist, as can be seen from the appended FIG. 1, of having, on the pressure circuit (1) supplying the motor (2), a valve consisting essentially of a valve. needle (3) slidably mounted inside a chamber (4) inside which opens a connection duct (5) to the pressure circuit (1) and an exhaust duct (50).
  • the needle valve is held in abutment against its seat (6) by the action of a calibrated spring (7) guided by a cup (8), the assembly preferably being associated with an adjustment means (9) allowing set the pressure level not to be exceeded.
  • Such an “overshoot” is due to the response time of the valve and to the pressure gradient between 0 and P0, setting value of the valve.
  • the invention therefore relates to a method for setting in motion or stopping the hydraulic motor driving an assembly having a large inertia which consists in placing on the pressure circuit supplying the motor a set of two valves making it possible to limit the pressure of each branch of the engine to a predetermined pressure level, the method according to the invention being characterized in that said set of valves is designed so that the pressure variation inside said engine between a pressure Po and a predetermined pressure corresponding to the value not to be exceeded, is produced in two distinct phases separated from each other by a bearing at a pressure intermediate between the aforementioned values.
  • the duration of the pressure build-up phases and those of the intermediate bearing are equivalent.
  • each phase will have a duration of one second.
  • the movable piston is disposed inside a chamber concentric with that inside which is disposed the calibrated spring, on the other side of the latter relative to the face acting on the needle, the nozzle for controlling the volume of oil discharged by said movable piston, opening directly into said chamber.
  • Figures 4 and 5 illustrate two embodiments of a device for implementing the method according to the invention, the different elements making up this device being shown in the position they occupy at rest when the engine is not not powered, position referenced (PA) in Figure 2 of the cycle of said process.
  • PA position referenced
  • each device allowing the implementation of the method according to the invention, therefore essentially consists of a set of two valves designated by the general reference (S1) and (S2), mounted in a support block (B), each valve (S1) or (S2) being mounted on each pressure circuit (1) supplying the engine (2).
  • valve (S1) is therefore connected to the pressure circuit (1) in order to supply the motor (2) so that it can turn in one direction.
  • This valve essentially consists of a needle valve (3) sliding inside a chamber (4).
  • This needle valve (3) is subjected, through the connection circuit (5), to the action of the pressure circuit (1).
  • the valve (3) is held in abutment against the fixed seat (6) by means of a calibrated spring (7), guided by guide cups (8).
  • the needle valve (3) is pierced along its length with a calibrated conduit (10) (nozzle) and has a cylindrical section (11) whose surface (A2) is less than that (A1 ) of the seat (6) supporting the needle valve (3).
  • a movable piston (12) disposed inside a chamber (13), inside which it can slide under the action of the pressure of hydraulic fluid (oil) which flows through a nozzle (14) connected to said chamber (13), thus controlling the volume of fluid discharged by said movable piston (12).
  • the movable piston (12) is arranged inside a chamber (13) concentric to that inside which is the calibrated spring (7).
  • This movable piston (12) is disposed on the other side of the calibrated spring (7) relative to the face acting on the needle valve (3).
  • the nozzle (14) opens inside said chamber (3) and therefore controls the volume of oil discharged by said movable piston (12).
  • Figures 5, 6 and 7 illustrate another embodiment in which the movable piston / chamber assembly is mounted in parallel with respect to the valve body itself.
  • said movable piston / chamber assembly associated with the valve S1 is mounted on the support block (2) in the extension of the valve body (S2), the movable piston and the chamber associated with this valve (S2 ) being mounted, in turn, in the extension of the valve body (S1).
  • FIG. 4 and FIGS. 5, 6 and 7 show the operations of the two embodiments illustrated in FIG. 4 and FIGS. 5, 6 and 7 , FIGS. 4 and 5 showing the positioning of the various elements before the start of the setting in motion process (or stop) of the motor (2).
  • FIGS. 4 and 5 showing the positioning of the various elements before the start of the setting in motion process (or stop) of the motor (2).
  • the operation of the two embodiments allowing the implementation of the method according to the invention will be described below by considering the starting of the engine (2) in forward motion while passing through the valve S1.
  • the pressure level of the intermediate bearing depends on the section ratio AT 2. A1
  • the duration of the bearing T0 depends on the volume of oil discharged by the movable piston (12), the calibrated nozzles (10) of the needle valve (3) and the evacuation chamber (13) of the piston.
  • the time it takes for the piston to travel will determine the time T0 equal to the duration of the bearing P0. It should be noted that the volume of oil discharged by the movable piston (12) goes directly to the other branch of the engine (2) which, combined with the fact that there is a bearing, reduces the risk of cavitation hydraulic motor.
  • the pressure exerted on the differential section (A1-A2) may possibly close the needle valve until this force overcomes the force of the setting force of the spring (7).
  • the evacuation chamber of the movable piston is connected to the opposite branch of the motor to be protected (2).
  • the piston of each valve is in the low position (zero stroke).
  • Such an assembly can be successfully used to control the rotation of a turret and will have the following dimensions if we consider that it is necessary to have a flow rate of thirty liters / minute and a set pressure of the hydraulic motor of 250 bars.
  • Piston diameter 10.3 mm - stroke 19.5 mm i.e. a volume of 1.62 cm 3.
  • valve according to the invention all of the elements of which are in line and integrated in a cartridge as illustrated in FIGS. 3 and 4 or in parallel as illustrated in FIGS. 5 to 7, it will be possible to also consider designing other types of embodiment, for example having assemblies where the movable piston is annular and slides outside.

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  • 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)
  • Safety Valves (AREA)
EP93420500A 1992-12-22 1993-12-17 Verfahren und Vorrichtung zum Starten oder Bremsen eines hydraulischen Antriebsmotors, welcher ein Gerät mit grosser Massenträgheit antreibt Withdrawn EP0604332A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9215811 1992-12-22
FR9215811A FR2699609B1 (fr) 1992-12-22 1992-12-22 Procédé et dispositif pour la mise en mouvement ou l'arrêt d'un moteur hydraulique entraînant un ensemble présentant une grande inertie.

Publications (1)

Publication Number Publication Date
EP0604332A1 true EP0604332A1 (de) 1994-06-29

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ID=9437185

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93420500A Withdrawn EP0604332A1 (de) 1992-12-22 1993-12-17 Verfahren und Vorrichtung zum Starten oder Bremsen eines hydraulischen Antriebsmotors, welcher ein Gerät mit grosser Massenträgheit antreibt

Country Status (2)

Country Link
EP (1) EP0604332A1 (de)
FR (1) FR2699609B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2750174A1 (fr) * 1996-06-20 1997-12-26 Mass Dispositif d'arret pour une machine hydraulique
WO1999019571A1 (de) * 1997-10-15 1999-04-22 O & K Orenstein & Koppel Aktiengesellschaft System zur lastdruckunabhängigen steuerung und lasthaltung mehrerer rotatorischer und/oder translatorischer verbraucher
EP1734295A1 (de) * 2005-06-15 2006-12-20 OIL CONTROL S.p.A. Ventil zum progressiven Bremsen
EP1793050A2 (de) * 2005-12-05 2007-06-06 Liebherr-Hydraulikbagger GmbH Hydraulikzylinder mit Endlagendämpfung
CN107923550A (zh) * 2016-03-30 2018-04-17 日立建机株式会社 减压阀单元

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2014698A (en) * 1978-02-17 1979-08-30 Gen Signal Corp Anti-cavitation and overload relief valve
JPS5955930A (ja) * 1982-09-21 1984-03-31 Hitachi Constr Mach Co Ltd 旋回駆動装置
EP0440801A1 (de) * 1989-06-26 1991-08-14 Kabushiki Kaisha Komatsu Seisakusho Hydraulische schaltung
WO1991015636A1 (en) * 1990-04-02 1991-10-17 Hitachi Construction Machinery Co., Ltd. Hydraulic drive system in civil engineering-construction machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2014698A (en) * 1978-02-17 1979-08-30 Gen Signal Corp Anti-cavitation and overload relief valve
JPS5955930A (ja) * 1982-09-21 1984-03-31 Hitachi Constr Mach Co Ltd 旋回駆動装置
EP0440801A1 (de) * 1989-06-26 1991-08-14 Kabushiki Kaisha Komatsu Seisakusho Hydraulische schaltung
WO1991015636A1 (en) * 1990-04-02 1991-10-17 Hitachi Construction Machinery Co., Ltd. Hydraulic drive system in civil engineering-construction machine
EP0537349A1 (de) * 1990-04-02 1993-04-21 Hitachi Construction Machinery Co., Ltd. Hydraulisches antriebssystem für baumaschinen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 160 (M - 312) 25 July 1984 (1984-07-25) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2750174A1 (fr) * 1996-06-20 1997-12-26 Mass Dispositif d'arret pour une machine hydraulique
WO1999019571A1 (de) * 1997-10-15 1999-04-22 O & K Orenstein & Koppel Aktiengesellschaft System zur lastdruckunabhängigen steuerung und lasthaltung mehrerer rotatorischer und/oder translatorischer verbraucher
EP1734295A1 (de) * 2005-06-15 2006-12-20 OIL CONTROL S.p.A. Ventil zum progressiven Bremsen
EP1793050A2 (de) * 2005-12-05 2007-06-06 Liebherr-Hydraulikbagger GmbH Hydraulikzylinder mit Endlagendämpfung
EP1793050A3 (de) * 2005-12-05 2011-08-03 Liebherr-Hydraulikbagger GmbH Hydraulikzylinder mit Endlagendämpfung
CN107923550A (zh) * 2016-03-30 2018-04-17 日立建机株式会社 减压阀单元
CN107923550B (zh) * 2016-03-30 2019-09-27 日立建机株式会社 减压阀单元

Also Published As

Publication number Publication date
FR2699609A1 (fr) 1994-06-24
FR2699609B1 (fr) 1995-02-10

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